Terahertz light source of high power and narrow line width
Terahertz Parametric Oscillator

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Terahertz Parametric Oscillator Terahertz Parametric Oscillator
The TPO systems are based on difference frequency generation in quasi-phase matched GaAs crystals placed inside an optical parametric oscillator (OPO) pumped by an ultrafast fiber laser. It generates 6-10 ps THz pulses at repetition rate of 80 MHz, delivering up to 1mW average power and 1.5 W of peak power. Central frequencies of 0.85 or 1.5 THz and a spectral width of 100 GHz fits perfectly into the atmospheric transmission windows, making these sources ideal for THz imaging applications. Very high peak powers make the TPO suitable for imaging systems employing non-linear effects, while sufficient average power makes it suitable for thermal detector array imaging as well.

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