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An efficient tunable high-repetition-rate KTP optical parametric oscillator (OPO) was deployed as a compact terahertz source. The KTP OPO was intracavity pumped by an acousto-optical (AO) Q-switched Nd:YVO4 laser and emitted two tunable wavelengths near degeneracy around 2 μm. A periodically inverted quasi-phase-matched (QPM) GaAs crystal and a GaSe crystal were used to generate terahertz (THz) wave...
We demonstrate cavity enhanced parametric THz generation with power of 339uW and enhancement factor of ∼151 through quasi-phase-matched GaP pumped by 1.5um pulsed fiber lasers.
We demonstrate a resonant cavity approach to enhance narrow band THz radiation. Two nanosecond laser pulses in a cavity interact with a nonlinear crystal to produce 7-fold enhancement of THz power compared to single-pass orientation.
We report a high-power single-frequency fiber laser system in the eyesafe wavelength region that pumps a GaSe crystal through difference frequency generation, producing narrowband terahertz (THz). Two single-frequency continuous-wave fiber seed lasers are modulated, then amplified with a three-stage single-mode amplifier. The resulting pulses are transform-limited and high power, producing a peak...
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