The generation of tunable ultrashort light pulses in the mid-IR spectral region using optical parametric oscillators is demonstrated. In particular, the operation of a continuous-wave mode-locked silver gallium selenide optical parametric oscillator is reported. The OPO was synchronously pumped by 1.55 $mu@m signal radiation from a noncritically phase-matched KTP-OPO operating at a repetition rate of 75.4 MHz with a pulse length of 40 ps. The tuning range extended from 1.94 $mu@m to 2.56 $mu@m for the signal and idler wave, respectively. A total average output power of up to 520 mW was generated. The possibility to generate tunable fs-pulses in this spectral range with high average output power using the same nonlinear material is discussed.
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机译：演示使用光学参数振荡器在中外光谱区域中产生可调谐超微光脉冲。特别地，报道了连续波模式锁定的银镓硒化镓光学参数振荡器的操作。通过以75.4MHz的重复率的非特性相位匹配的KTP-OPO同步泵送了1.55 $ MU @ M信号辐射的OPO。脉冲长度为40ps。调谐范围分别从1.94 $ mu @ m到2.56 $ mu @ m分别为信号和idler波延伸到2.56 $ mu @ m。产生高达520 MW的总平均输出功率。讨论了使用使用相同非线性材料的高平均输出功率在该光谱范围内产生可调谐FS脉冲的可能性。
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