ポッケルスセルドライバー(Pockels Cell Drivers)及びHV電源(HV Power Supplies)
長年の経験と実績に裏打ちされた確かな技術力

EP29 お見積り・お問い合わせへ
  • 製品概要
  • 仕様
  • カタログ・関連資料
ポッケルスセルドライバー(Pockels Cell Drivers)及びHV電源(HV Power Supplies) ポッケルスセルドライバー(Pockels Cell Drivers)及びHV電源(HV Power Supplies)

製品概要

EKSPLA社製は、長年に渡りレーザ及びレーザに関する電気機器の製造・販売を行っており、常に最先端の製品を世に送り出しています。
特にハイパワーエレクトロニクス(高速/高電圧電源)は、EKSPLAが得意とするコア技術の一つです。
R&DからOEMまでと幅広い用途に対応するために、お客様のご要望に応じたカスタマイズも承っておりますので、お気軽にお問い合わせください。

製品ラインナップ

下記の出力タイプをクリックすると瞬時にその場所へ移動します。

PCD-UHR series(OEM Cavity Dumper Drivers)

Features

PCD-UHR series(OEM Cavity Dumper Drivers)
クリックするとメーカーホームページに移動します。
・Fast HV rise/fall time <4 – 8 ns
・HV pulse amplitude up to 3.6 kV
・Pulse repetition rate up to 3.5 MHz
・Output pulse jitter < 50 ps if trigger pulse rise time < 0.5 ns
pdfDownload datasheet 

PCD-UHR series Pockels cell drivers are designed for wide
range of applications and operating modes. Repetition rate
can be up to 500 kHz for standard range of drivers, up to
1 MHz enhanced and up to 3.5 MHz high rate. Standard
range of possible pulse durations is from 100 ns to 5 μs. It
can be extended to infinity using pulse regeneration
technique.

Different versions of the drivers built as variations of
voltage, repetition rate and rise/fall time are presented
below. That three main parameters are mutually
dependent. Higher voltage means longer rise/fall time, and
higher repetition rate is limited by voltage. However, all the
drivers can work at 1 MHz and even higher repetition rate
in burst mode not exceeding specified average HV power.
Connection diagram can be PUSH-PULL configuration
using stand-alone driver, as well as FULL BRIDGE using two
drivers for one Pockels cell. FULL BRIDGE configuration
gives such advantages as repetition rate doubling to reach
up to 7 MHz rate, pulse duration shortening down to zero
or voltage doubling on pockels cell. Contact EKSPLA for
more information and suggestions for Pockels cell driving
solutions you need.

Most of PCD-UHR series units are available in two versions:
„open frame“ which is ideal for OEM manufacturers
incorporating drivers in their own systems and encased in
aluminum housings. Encasing of Pockels cell driver in
aluminum housing solves two problems: shields both
humans and electronics from high voltage impact from
operating Pockels cell driver, and protects driver itself from
potentially harmful external contact – ensuring safe
operation and driver longevity. The housed option is
especially handy for researchers and custom product
manufacturers who use these drivers during their own
systems build-up.

PCD-UHRS modification has possibility to shorten output
pulse duration down to 15 ns. Following they can be used
for single pulse selection in pulse picker applications for
high repetition rate lasers.

PCD-UHR series drivers has two modifications by control
inputs.

PCD-UHR1 drivers are controlled by one triggering pulse
while rising edge turns on high voltage to Pockels cell and
falling edge turns off – see Fig. 4. for reference.

PCD-UHR2 drivers are controlled by two triggering pulses
that are applied to separate inputs of the driver, see Fig. 3.

Pulse regeneration technique

Gives possibility to operate push-pull drivers very long output pulse, and full bridge drivers get very low repetition rate.
Pulse regeneration does not work with bipolar and short-pulse drivers (see Fig. 5.).

Control-timing-charts-for-two-pulses-controlled-drivers-fig3

Fig. 3. Control timing charts for two-
pulses controlled drivers

Control-timing-charts-for-single-pulse-controlled-drivers-fig4

Fig. 4. Control timing charts for single
pulse controlled drivers

Principle-and-requirements-for-long-output-pulse-forming-fig5

Fig 5. Principle and requirements for
long output pulse forming – control way
using pulse regeneration. Left diagram is
related to PCD-UHR series, right for
2PCD-UHR series (Full-Bridge) drivers

Drivers Selection Chart

Below chart presents summary of full line of PCD-UHR series drivers. This chart helps to choose optimal driver for your
application. Horizontal axis means repetition rate, vertical voltage. Lower voltage and lower repetition rate means lower price.

PCH-UHR-series-drivers-selection-chart

PCH-UHR series drivers selection chart

PCD-UHR-ordering-information

PCD-UHR ordering information

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PCD-UHV series(OEM Cavity Dumper Drivers)

Features

PCD-UHV series(OEM Cavity Dumper Drivers)
クリックするとメーカーホームページに移動します。
・HV pulse amplitude up to 5.6 kV
・HV repetition rate up to 10 kHz
・HV pulse duration down to 15 ns
・HV pulse amplitude doubling layout
・Easy integration with HV power supply
・Switchable one/two trigger pulses control mode
pdfDownload datasheet 

Performance & Drawings

Outline-drawing-of-PCD-UHV

Fig. 1. Outline drawing of PCD-UHV

Diagram-of-Pockels-cell-connection-to-driver-in-one-pulse-control-mode

Fig. 2. Diagram of Pockels’ cell
connection to driver and timing charts
for one-pulse control mode

Diagram-of-Pockels-cell-connection-to-driver-for-two-pulses-control-mode

Fig. 3. Diagram of Pockels’ cell
connection to driver and timing charts
for two pulses control mode

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PCD-PHR series(OEM Cavity Dumper Drivers)

Features

PCD-PHR series(OEM Cavity Dumper Drivers)
クリックするとメーカーホームページに移動します。
・Pulse repetition rate up to 100 kHz
・Fast HV rise time <7 ns for 4 kV pulse
・HV pulse amplitude up to 4 kV
pdfDownload datasheet 

PCD-PHR has been designed for use in mode-locked lasers
for cavity dumping or for Q-switching of solid-state
nanosecond lasers. Fast HV (less than 7 ns) edge ensures
excellent pre- and post-pulse contrast.

Ability to operate at high pulse repetition rates makes this
driver perfect fit for most of diode-pumped nanosecond
lasers. For pulse repetition rates up to 10 kHz heatsink is
not required.

For high repetition rates the driver should be attached to
the heatsink with thermal resistance of at least 0.4 °C/W for
room temperature (25 °C) operation.

The driver should be mounted into dielectric box (not
provided) providing electrical insulation. Low voltage power
supply is required to internal triggering circuit, while tuning
of HV power supply voltage.

Performance

Oscillogram-of-PCD-PHR-driver-operation

Fig. 1. Oscillogram of PCD-PHR driver
operation

Fast-edge-of-HV-pulse-in-detail

Fig. 2. Fast edge of HV pulse in detail

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PCD-P series(OEM Cavity Dumper Drivers)

Features

PCD-P series(OEM Cavity Dumper Drivers)
クリックするとメーカーホームページに移動します。
・For cavity dumping in mode-locked lasers
・For cavity Q-switching in nanosecond lasers
・Fast HV (less than 7 ns) edge ensures excellent pre- and post-pulse contrast
pdfDownload datasheet 

Performance

Oscillogram-of-PCD-P-driver-operation-whole-HV-pulse

Oscillogram of PCD-P driver operation:
whole HV pulse

Oscillogram-of-PCD-P-driver-operation-HV-pulse-fall

Oscillogram of PCD-P driver operation:
HV pulse fall

Time-diagram-of-PCD-P-cavity-dumping-driver

Time diagram of PCD-P cavity dumping
driver

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PCD-N series(OEM Cavity Dumper Drivers)

Features

PCD-N series(OEM Cavity Dumper Drivers)
クリックするとメーカーホームページに移動します。
・For Q-switching of lasers without use of phase retardation plate
・Different versions tailored for specific applications
pdfDownload datasheet 

Drivers PCD-N-2 and PCD-N-3 are designed for
Q-switching of nanosecond lasers without use of phase
retardation plate. High voltage is applied to Pockels cell in
order to inhibit oscillation. Pockels cell is opened by
negative polarity pulse allowing laser to radiate. Driver
need for external HV power supply, HV05Wm is suitable.

Drivers PCD-N-3D and PCD-N-3B is integrated with ±4 kV
HV power supply. Voltage control is done using CAN
interface. EKSPLA suggest CAN-USB converter with Can
browser software for Windows® operating system. Can
browser can be kept disconnected after proper voltage
value was set.

Drivers PCD-N-2D and PCD-N-3D are designed for
operation with DKDP crystals, drivers PCD-N-2B and PCD-
N-3B – for BBO.

Performance & Images

External-view-of-PCD-N-2-driver

Fig. 1. External view of PCD-N-2 driver

External-view-of-PCD-N-3x-driver

Fig. 2. External view of PCD-N-3x driver

Control-time-diagram-of-PCD-N-series-drivers

Fig. 3. Control time diagram of PCD-N
series drivers

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OEM HV series(HV Power Supplies for Pockels Cell Drivers)

Features

OEM HV series(HV Power Supplies for Pockels Cell Drive rs)
クリックするとメーカーホームページに移動します。
・Designed for powering Pockels cell driver with appropriate power and voltage requirement
・Tailored for OEM applications
pdfDownload datasheet 

Images

HV40Wm-power-supply

HV40Wm power supply

HV80Wm-PCD-power-supply

HV80Wm power supply

HV120Wm-and-HV2x60Wm-power-supply

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PS4012 series(HV Power Supplies for Pockels Cell Drivers)

Features

PS4012 series(HV Power Supplies for Pockels Cell Drivers)
クリックするとメーカーホームページに移動します。
・HV power supply and low voltage 24 V DC power supply in one box
・Tailored for use in laboratories
・HV tuning by multi-turn knob
・3½ LCD display for voltage monitoring
・Various versions for different power requirement
pdfDownload datasheet 

Desktop HV power supply PS4012 is designed for powering
Pockels cell drivers. It features internal HV power supply as
well as low voltage 24 V DC power supply in one case. That
approach gives possibility for convenient powering in your
laboratory any Pockels cell driver manufactured by Ekspla.

Different Pockels cell drivers’ needs different voltage and
power. Line of HV power supplies meets that requirement
by choosing best suitable modification from table. HV
adjustment is made by multi-turn knob on front panel.

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Pockels Cell Drivers   標準仕様

下記の出力タイプをクリックすると瞬時にその場所へ移動します。

PCD-UHR series(OEM Cavity Dumper Drivers)Specfication

General Specifications

Driver model 1) PCD-UHR series PCD-UHRS series
Maximal HV rated voltage (for testing only) See next tables for specific drivers
Maximal HV operating voltage <90% from rated voltage
HV pulse rise time < 4-8 ns (Fig.7)
HV pulse fall time < 4-8 ns (Fig.8)
HV pulse duration for single driver 100 – 5000 ns 15 – 5000 ns
Max HV pulse duration for full-bridge configuration 0 – 5000 ns N/A
Maximal HV pulse repetition rate 3.5 MHz 600 kHz
External triggering pulse duration requirement >100 ns >10 ns
External triggering pulse amplitude requirement 3.5 – 5 V (50 Ω load)
External triggering pulse rise and fall time < 20 ns < 5 ns
Maximal length of leads to Pockels cell 100 mm
Control diagram options:
   – single triggering pulse control Fig. 4
   – two trigger pulses control Fig. 3
HV pulse delay, typical 45 ns 30 ns
External powering requirements:
   – high voltage supply depends on modification
   – low voltage DC supply 24 +1/-10 V, <150 mA
12±0.5 V; <150 mA on request
24±1 V, <150 mA

1.Specifications are given for Pockels cell with capacity <6 pF. Not all combinations of parameters can be possible at the same time.
Specifications are subject to changes without advance notice.

2.Driver needs to be mounted on the heatsink (excluding water cooled versions). Heat sink temperature needs to be lower than 35 °C (95 °F) in
all regimes of operation.

OEM-version-of-PCD-UHR-series-Pockels-cell-driver-fig1

OEM version of PCD-UHR series Pockels
cell driver

Encased-version-of-PCD-UHR-series-Pockels-cell-driver-fig2

Encased version of PCD-UHR series
Pockels cell driverd

Control-timing-charts-for-two-pulses-controlled-drivers-fig3

Fig. 3. Control timing charts for two-
pulses controlled drivers

Control-timing-charts-for-single-pulse-controlled-drivers-fig4

Fig. 4. Control timing charts for single
pulse controlled drivers

Typical-output-pulse-shape-fig6

Fig. 6. Typical output pulse shape

Typical-rising-front-of-output-pulse-in-detail-fig7

Fig. 7. Typical rising front of output pulse
in detail

Typical-falling-front-of-output-pulse-in-detail-fig8

Fig. 8. Typical falling front of output
pulse in detail

OEM Version Specifications

Configuration examples of OEM version of PCD-UHR series drivers

P/N of driver PCD-UHR1-
50-3.6
PCD-UHR2-
50-3.6
PCD-UHR1-
400-1.5
PCD-UHR2-
400-1.5
PCD-UHR1-
250-3.6
PCD-UHR2-
250-3.6
PCD-UHR1-
250-2.5
PCD-UHR2-
250-2.5
PCD-UHR1-
500-2.6
PCD-UHR2-
500-2.6
PCD-UHR1-
1000-1.8
PCD-UHR2-
1000-1.8
Maximal HV rated voltage 3.8 kV 1.6 kV 3.7 kV 2.6 kV 2.7 kV 2.0 kV
Maximal HV operating voltage 3.6 kV 1.5 kV 3.6 kV 2.5 kV 2.6 kV 1.8 kV
Maximal HV repetition rate 50 kHz 400 kHz 250 kHz 250 kHz 500 kHz 1000 kHz
Pulse duration 1) 100 – 5000 ns
HV pulse rise time, typical <7 ns <5.5 ns <7 ns <6 ns <6.5 ns <6 ns
HV pulse fall time, typical <7 ns <5.5 ns <7 ns <6 ns <6.5 ns <6 ns
Output polarity positive
HV power consumption <20 W <20 W <75 W <40 W <90 W <80 W
12V/24V power consumption 1 W 5.5 W 4 W 4.5 W 6 W 9 W
Dimensions see Fig. 10, 11 see Fig. 13, 14
Cooling conductive conductive or water

1.Pulse duration of PCD-UHR2 series drivers can be extended using pulse regeneration.

2.Driver needs to be mounted on the heatsink (excluding water cooled versions).

3.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

4.Please specify working voltage and required tuning range by ordering.

5.HV output voltage to Pockels cell is equal to HV power supply voltage.

OEM-version-of-PCD-UHR-series-driver-with-conductive-pad-fig9

Fig. 9. OEM version of PCD-UHR series
driver with conductive pad. Suitable for
repetition rate up to 50 kHz

Outline-drawing-of-PCD-UHR1-series-drivers-with-conductive-pad-fig10

Fig. 10. Outline drawing of PCD-UHR1
series drivers with conductive pad

Outline-drawing-of-PCD-UHR2-series-drivers-with-conductive-pad-fig11

Fig. 11. Outline drawing of PCD-UHR2
series drivers with conductive pad

OEM-version-of-PCD-UHR-series-driver-with-general-purpose-pad-fig12

Fig. 12. OEM version of PCD-UHR series
driver with general purpose pad

Outline-drawing-of-PCD-UHR1-series-driver-with-general-purpose-pad-fig13

Fig. 13. Outline drawing of PCD-UHR1
series driver with general purpose pad

Outline-drawing-of-PCD-UHR2-series-driver-with-general-purpose-pad-fig14

Fig. 14. Outline drawing of PCD-UHR2
series driver with general purpose pad

Encased Version Specifications

Configuration examples of encased version of PCD-UHR series drivers

P/N of driver PCD-UHR1-
250-3.6-C
PCD-UHR2-
250-3.6-C
PCD-UHR1-
250-2.5-C
PCD-UHR2-
250-2.5-C
PCD-UHR1-
500-2.6-C
PCD-UHR2-
500-2.6-C
PCD-UHR1-
1000-1.8-C
PCD-UHR2-
1000-1.8-C
Maximal HV rated voltage 3.7 kV 2.6 kV 2.7 kV 2 kV
Maximal HV operating voltage 3.6 kV 2.5 kV 2.6 kV 1.8 kV
Maximal HV repetition rate 250 kHz 250 kHz 500 kHz 1000 kHz
Pulse duration 1) 100 – 5000 ns
HV pulse rise time, typical <7 ns <6 ns <6.5 ns <6 ns
HV pulse fall time, typical <7 ns <6 ns <6.5 ns <6 ns
Output polarity positive
HV power consumption <75 W <40 W <90 W <80 W
12V/24V power consumption 4 W 4.5 W 6 W 9 W
Dimensions see Fig. 16
Cooling water

1.Pulse duration of PCD-UHR2 series drivers can be extended using pulse regeneration.

2.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

3.HV output voltage to Pockels cell is equal to HV power supply voltage.

4.Please specify working voltage and required tuning range by ordering.

Configuration examples of encased version of PCD-UHR series bipolar drivers

P/N of driver PCD-UHR1-
1000-2.9-C
PCD-UHR2-
1000-2.9-C
PCD-UHR1-
350-4-C
PCD-UHR2-
350-4-C
PCD-UHR1-
300-4.6-C
PCD-UHR2-
300-4.6-C
PCD-UHR1-
250-5.2-C
PCD-UHR2-
250-5.2-C
Maximal HV rated voltage 3.0 kV 4.2 kV 4.8 kV 5.3 kV
Maximal HV operating voltage 2.9 kV 4.0 kV 4.6 kV 5.2 kV
Maximal HV repetition rate 1000 kHz 350 kHz 300 kHz 250 kHz
Pulse duration 1) 100 – 5000 ns
HV pulse rise time, typical <7.5 ns <7.5 ns <8.0 ns <8.5 ns
HV pulse fall time, typical <7.5 ns <7.5 ns <8.0 ns <8.5 ns
Output polarity bipolar
HV power consumption 2) <120 W <100 W <100 W <100 W
12V/24V power consumption 9 W
Dimensions see Fig. 23
Cooling water

1.Pulse duration of PCD-UHR2 series drivers can be extended using pulse regeneration.

2.Bipolar HV power supply HV2×60Wm is specifically designed for these drivers.

3.Driver needs to be mounted on the heatsink (excluding water cooled versions).

4.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

5.HV output voltage to Pockels cell is equal to HV power supply voltage i.e. sum of positive and negative HV values.

6.Please specify working voltage and required tuning range by ordering.

Encased-version-of-driver-PCD-UHR-fig15

Fig. 15. Encased version of driver PCD-
UHR models PCD-UHRx-200-xx, PCD-
UHRx-250-xx, PCD-UHRx-500-xx, PCD-
UHRx-1000-1.8

Outline-drawing-of-encased-version-of-driver-PCD-UHR-fig16

Fig. 16. Outline drawing of encased
version of driver PCD-UHR models PCD-
UHRx-200-xx, PCD-UHRx-250-xx, PCD-
UHRx-500-xx, PCD-UHRx-1000-1.8

Encased-version-of-bipolar-PCD-UHR-series-drivers-fig22

Fig. 22. Encased version of bipolar PCD-
UHR series drivers

Outline-drawing-of-encased-version-of-bipolar-PCD-UHR-series-drivers-fig23

Fig. 23. Outline drawing of encased
version of bipolar PCD-UHR series
drivers

Short Pulse Version Specifications

Specific features of Short-pulse PCD-UHRS drivers

・Short circuit protection at driver output
・Driver pad overheat sensor stops operation when overheated
・Overheat optocoupled output signal –open circuit means error state
・Switchable single pulse and two pulses control operation modes
・LED for error indication (green for overheat and red for short circuit)

Configuration examples of OEM version of PCD-UHRS series short-pulse drivers

P/N of driver PCD-UHRS-50-3.6 PCD-UHRS-400-1.5 PCD-UHRS-250-3.6 PCD-UHRS-250-2.5 PCD-UHRS-600-2.5 PCD-UHRS-600-1.8
Maximal HV rated voltage 3.8 kV 1.6 kV 3.7 kV 2.6 kV 2.6 kV 2.0 kV
Max/min HV operating voltage 3.6 kV / 1.8 kV 1.5 kV / 0.75 kV 3.6 kV / 1.8 kV 2.5 kV / 1.25 kV 2.5 kV / 1.25 kV 1.8 kV / 0.9 kV
Maximal HV repetition rate 50 kHz 400 kHz 250 kHz 250 kHz 600 kHz 600 kHz
Pulse duration 15 – 5000 ns 15 – 620 ns 15 – 1250 ns 15 – 1000 ns 15 – 400 ns 15 – 400 ns
HV pulse rise time, typical <7 ns <5.5 ns <7 ns <6 ns <6.5 ns <6 ns
HV pulse fall time, typical <7 ns <5.5 ns <7 ns <6 ns <6.5 ns <6 ns
Output polarity positive
HV power consumption <20 W <20 W <75 W <40 W <100 W <35 W
12V/24V power consumption 1 W 5.5 W 4 W 4.5 W 7 W 7 W
Dimensions see Fig. 18 see Fig. 19
Cooling conductive conductive or water

1.Driver needs to be mounted on the heatsink (excluding water cooled versions).

2.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

3.Please specify working voltage and required tuning range by ordering.

4.HV output voltage to Pockels cell is equal to HV power supply voltage.

Configuration examples of encased version of PCD-UHRS series short-pulse drivers

P/N of driver PCD-UHRS-250-3.6-C PCD-UHRS-250-2.5-C PCD-UHRS-600-2.5-C
Maximal HV rated voltage 3.7 kV 2.6 kV 2.6 kV
Max/min HV operating voltage 3.6 kV / 1.8 kV 2.5 kV / 1.25 kV 2.5 kV / 1.25 kV
Maximal HV repetition rate 250 kHz 250 kHz 600 kHz
Pulse duration 15 – 1250 ns 15 – 1000 ns 15 – 400 ns
HV pulse rise time, typical <7 ns <6 ns <6.5 ns
HV pulse fall time, typical <7 ns <6 ns <6.5 ns
Output polarity positive
HV power consumption <75 W <40 W <100 W
12V/24V power consumption 4 W 4.5 W 7 W
Dimensions see Fig. 21
Cooling water

1.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

2.Please specify working voltage and required tuning range by ordering.

3.HV output voltage to Pockels cell is equal to HV power supply voltage.

OEM-version-of-PCD-UHRS-series-driver-with-general-purpose-pad-fig17

Fig. 17. OEM version of PCD-UHRS series,
driver with general purpose pad

Outline-drawing-of-PCD-UHRS-series-driver-with-conductive-pad-fig18

Fig. 18. Outline drawing of PCD-UHRS
series driver with conductive pad

Outline-drawing-of-PCD-UHRS-series-driver-with-general-purpose-pad-fig19

Fig. 19. Outline drawing of PCD-UHRS
series driver with general purpose pad

Encased-version-of-driver-PCD-UHRS-fig20

Fig. 20. Encased version of driver PCD-
UHRS

Outline-drawing-of-encased-version-of-driver-PCD-UHRS-fig21

Fig. 21. Outline drawing of encased
version of driver PCD-UHRS

Full Bridge Version Specifications

Configuration samples of FULL-BRIDGE version of PCD-UHR series drivers

P/N of FULL-BRIDGE driver 2PCD-UHR1-1000-2.4-C
2PCD-UHR2-1000-2.4-C
2PCD-UHR1-2000-1.6-C
2PCD-UHR2-2000-1.6-C
Base driver PCD-UHR1-500-2.5
PCD-UHR2-500-2.5
PCD-UHR1-1000-1.8
PCD-UHR2-1000-1.8
Maximal HV operating voltage 2.4 kV 1.6 kV
Maximal HV repetition rate with frequency doubling 1) 1000 kHz 2000 kHz
HV pulse duration range for OUT1 100 – 5000 ns
HV pulse duration range for OUT2 100 – 5000 ns
HV pulse duration range to Pockel’s cell 0 – 5000 ns
HV pulse rise time <6.5 ns <6 ns
HV pulse fall time <6.5 ns <6 ns
Maximal capacitance of Pockel's cell <6 pF
HV power consumption <160 W 2)
Case see Fig. 27
Cooling water

1.Full-Bridge drivers are generally designed for operation at high repetition rate. However, low repetition rate pulsing can be achieved using
pulse regeneration technique.

2.Two HV power supplies HV80Wm are suggested.

3.Heat sink temperature needs to be lower than 35 °C (95 °F) in all regimes of operation.

4.HV output voltage pulse to Pockels cell appears as diference of pulses OUT1 and OUT2 and is lower as HV power supply voltage.

5.Contact Ekspla for technical details based on your request.

Diagram-of-Pockels-cell-full-bridge-connection-to-driver-fig24

Fig. 24. Diagram of Pockels cell full-
bridge connection to driver

External-view-of-full-bridge-driver-fig25

Fig. 25. External view of full-bridge driver

Principle-of-4-phase-control-of-FULL-BRIDGE-driver-configuration-fig26

Fig. 26. Principle of 4-phase control of
FULL-BRIDGE driver configuration

Outline-drawing-of-case-for-full-bridge-drivers-fig27

Fig. 27. Outline drawing of case for full-
bridge drivers

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PCD-UHV series(OEM Cavity Dumper Drivers)Specfication

Specifications

Operation regime 1) 4.2 kV mode 5.6 kV mode
High voltage (HV) pulse amplitude to cell 4.2 kV 5.6 kV
Output polarity bipolar
HV pulse rise time, typical 7 ns 8 ns
HV pulse fall time, typical 7 ns 8 ns
HV pulse duration 30-3000 ns
Maximal HV pulse repetition rate 10 kHz 5 khz
External triggering pulse amplitude requirement 3.5-5 V (50 Ω load)
External triggering pulse rise & fall time < 5 ns
HV pulse delay 30 ns
External powering requirements:
    HV power supply 2) ≤ 2.1 kV, 5 W ≤ 2.8 kV, 5 W
    low voltage DC supply, switchable 15-25 V, 150 mA or 12 V, 220 mA (0.5 A inrush current)
Dimensions ( L x W x H):
    driver board 135 x 65 x 25 mm
    driver board mounted with HV05Wm power supply 135 x 65 x 55 mm

1.Specifications are subject to changes without advance notice.

2.Typical voltage control limits for HV05Wm are 1.8 to 2.8 kV. Other limits are available on your request.

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PCD-PHR series(OEM Cavity Dumper Drivers)Specfication

Specifications

Model 1) PCD-PHR
Maximum high voltage (HV) pulse amplitude 4.0 kV
Polarity Positive
HV pulse rise time < 7 ns
HV pulse fall time ~2 µs 2)
HV pulse duration 180 ns 2)
Maximum HV pulse repetition rate 100 kHz
HV pulse jitter < 0.5 ns
External triggering pulse duration requirement 100 – 1000 ns
External triggering pulse amplitude requirement 3 – 5 V (50 Ω)
External triggering pulse rise and fall time < 10 ns
HV pulse delay 35 – 40 ns
External powering requirements:
    high voltage supply 0 – 4.0 kV, 9 mA max 3)
    low voltage DC supply 9 – 24 V, 500 mA max 3)
Operating temperature 0 – 35 °C 4)
Size 104 × 52 × 25 mm

1.Specifications are subject to changes without advance notice. Whether you require a custom design or production quantities for a scientific
and/or industrial applications, our team of engineers would welcome the opportunity to discuss your requirements.

2.Typical value.

3.Test conditions: PRR=100 kHz, C=6 pF, U=4 kV.

4.Heatsink temperature should be below 35° C at 100 kHz pulse repetition rate.

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PCD-P series(OEM Cavity Dumper Drivers)Specfication

Specifications

PCD-P has been designed for use in mode-locked lasers for cavity dumping or for cavity Q-switching of solid-state
nanosecond lasers. Fast HV (less than 7 ns) edge ensures excellent pre- and post-pulse contrast.

Model 1) PCD-P
Maximum high voltage (HV) pulse amplitude 4.2 kV
HV pulse fall time < 7 ns
HV pulse rise time ~0.1 ms
HV pulse duration from 5 to 100 µs 2)
Maximum HV pulse repetition rate 2.5 kHz
Jitter < 0.5 ns
External triggering pulse duration requirement 100 – 1000 ns
External triggering pulse amplitude requirement 3 – 5 V (50 Ω )
External triggering pulse rise & fall time < 20 ns
HV pulse delay 35 – 40 ns
External powering requirements:
    high voltage supply 4.4 kV, 0.2 mA max
    low voltage DC supply 24 – 28 V, 50 mA max
Size 100 × 50 × 40 mm

1.Specifications are subject to changes without advance notice.

2.According to customers request.

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PCD-N series(OEM Cavity Dumper Drivers)Specfication

Specifications

Model 1) PCD-N-2D PCD-N-2B PCD-N-3D PCD-N-3B
Maximum high voltage to cell (HV) pulse amplitude (U1 + U2) 5 kV 8 kV 7.6 kV
U1 value (Fig. 3) equal to HV powering voltage
U2 value (Fig. 3) equal to 0.25xU1 0 V equal to 0.3xU1 0 V
HV pulse fall time (a) <15 ns <12 ns
HV pulse rise time, typical (b) 60 µs 120 µs
HV pulse duration, typical (c) 300 µs (1200 µs optionally) 650 µs
HV pulse repetition rate ≤ 250 Hz ≤ 100 Hz
HV pulse delay (d) 40 ns 25 ns
External triggering pulse duration 100 – 1200 µs 120 – 650 µs
External triggering pulse amplitude 3 – 5 V (50 Ω)
External triggering pulse rise & fall time <20 ns
Board dimensions 92 x 70 x 22 mm 2)
Mounting holes location for M3 studs 84 x 62 mm
External powering requirements
    DC supply 12 – 24 V, max 200 mA 12 V, max 100 mA
    HV supply 4 kV, 1 mA n/a

1.Specifications are subject to changes without advance notice.

2.Keep safety distance at least 5 mm from any side of board or any component to surrounding conductive parts.

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OEM HV series(HV Power Supplies for Pockels Cell Drivers)Specfication

Specifications

Power supply HVxxWm series is designed for powering
pockels cell driver with appropriate power and voltage
requirement. Due to its performance and reliable design,
HVxxWm is good choice for OEM customers.

Table below shows general specifications of HV power
supplies. Particularly “Maximal output high voltage” row
gives reference of maximal achievable voltage for particular
model limited by design.

For specific driver this limitation is different. E.g. for the
driver PCD-UHR1-1000-1.8 voltage control limits are made
from 0.8 kV to 1.8 kV typically.

Power supplies HV120Wm and HV2x60Wm are equipped
with overheat protection and LED indicator that stops
operation and lights if ambient temperature exceeds 55 °C.

Model HV05Wm HV40Wm HV80Wm HV120Wm HV2x60Wm
Maximal high voltage output options 1) 1.8 kV
2.8 kV
4.8 kV
1.3 kV
1.8 kV
2.5 kV
3.6 kV
4.0 kV
1.8 kV
2.6 kV
3.1 kV
3.6 kV
4.0 kV
4.4 kV
1.8 kV
2.6 kV
3.1 kV
3.6 kV
±1.4 kV
±2.6 kV
Voltage control limits -1 kV from maximal value
Maximal output power at maximal output voltage 2) 5 W 40 W 80 W 120 W 2x60W
Output voltage control options 3) CAN interface 4), internal trimmer
External powering 24 V DC, 
<15 W 5)
24 V DC, 
<50 W
24 V DC, 
<90 W
24 V DC,
<150 W
24 V DC,
<150 W
Dimensions (L x W x H) 135 × 70 × 
30 mm
160 × 70 × 
40 mm
175 × 70 × 
45 mm
175 × 110 × 
45 mm
175 × 110 × 
45 mm
Mounting holes Ø 3.4 mm location 125 × 35 mm 150 × 60 mm 165 × 60 mm 165 × 100 mm 165 × 100 mm

1.Matching to Pockels cell driver voltage requirement is necessary by ordering.

2.Maximal power is proportionally lower by tuning to lower HV output.

3.Needs to be indicated by ordering.

4.Requires USB-CAN converter for computer control that sold separately.

5.Optionally 12 V DC, <15 W.

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PS4012 series(HV Power Supplies for Pockels Cell Drivers)Specfication

Specifications

Model PS4012-05 PS4012-40 PS4012-80 PS4012-120 PS4012-150 PS4012-2x60
Maximal high voltage output options 1.8 kV
2.8 kV
4.8 kV
1.3 kV
1.8 kV
2.5 kV
3.6 kV
1.8 kV
2.6 kV
3.1 kV
3.6 kV
4.0 kV
4.4 kV
1.8 kV
2.6 kV
3.1 kV
3.6 kV
1.8 kV
2.6 kV
3.1 kV
3.6 kV
4.0 kV
4.4 kV
±1.4 kV
±2.6 kV
Maximal output power at maximal output voltage 1) 5 W 40 W 80 W 120 W 150 W 2x60 W
Voltage control limits 40 % Umax to Umax
24 V DC remaining power for external needs (including PCD) 190 W 150 W 100 W 60 W 20 W 60 W
Mains voltage 90 to 264 V AC, 47-63 Hz
Dimensions (W×L×H) 260 × 280 × 100 mm
Weight 2.7 kg

1.Maximal power is proportionally lower by tuning to lower HV output.

Output ripple is 0.5% typically at maximal power for all models of HV power supplies. External filter can be used to reduce that
value if certain application requires smoother output. All Pockels cell drivers made by Ekspla have integrated ripple filter and
usually do not require additional one. Contact Ekspla for suggestions if your specific application needs lower ripple voltage.

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