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首页> 外文会议>Nonlinear frequency generation and conversion: materials, devices, and applications X >Generation of watt level mid-infrared wavelengths using intra-cavityZnGeP-2 OPO within a 2.1μm Ho:YAG laser
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Generation of watt level mid-infrared wavelengths using intra-cavityZnGeP-2 OPO within a 2.1μm Ho:YAG laser

机译：在2.1μmHo：YAG激光器中使用腔内ZnGeP-2 OPO产生功率级的中红外波长

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We report on watt level mid-infrared (MIR) wavelength generation using intra-cavity ZnGeP-2 (ZGP) optical parametrical oscillator (OPO) within a 2.1μm Ho:YAG laser. A compact cavity of less than 50cm was designed for the intra-cavity OPO setup. With the same laser setup, watt level of both 2.1um and MIR wavelengths were generated. An average output power of >20W of 2.1μm and >1W of MIR wavelength at 10 KHz repetition rate were achieved from a 46W Tm fiber pump laser. The Ho:YAG laser was resonantly pumped by a 1.9um Tm:fiber laser and nanosecond pulses were generated using an electro-optics q-switch modulator. With the use of a 7J4 waveplate and a thin film polarizer, a variable output coupler for the Ho:YAG laser was formed where we could optimize the output coupling to achieve 21W of 2.1 μmwavelength. MIR wavelengths were generated using commercial ZGP crystals from Inrad. A HR mirror for the MIR wavelengths was inserted into the Ho:YAG cavity to form the intra-cavity ZGP OPO. The rear mirror of the Ho:YAG cavity act as the output coupler with R=70% for the MIR wavelengths. Optimizing of the MIR generation was done by tuning the phase-matching angle of the ZGP and adjusting the cavity length of the OPO. A preliminary result of the intra-cavity ZGP OPO generates >1W of MIR wavelength.
机译：我们报告了在2.1μmHo：YAG激光器中使用腔内ZnGeP-2（ZGP）光学参量振荡器（OPO）产生的功率级中红外（MIR）波长。为腔内OPO设计了小于50cm的紧凑型腔。在相同的激光器设置下，产生了2.1um和MIR波长的功率电平。从46W Tm光纤泵浦激光器获得的平均输出功率> 20W为2.1μm，MIR波长为> 1W（重复频率为10 KHz）。 Ho：YAG激光器由1.9um Tm：光纤激光器共振泵浦，并使用电光q开关调制器产生纳秒级脉冲。通过使用7J4波片和薄膜偏振器，形成了用于Ho：YAG激光器的可变输出耦合器，我们可以在该输出耦合器中优化输出耦合，以实现21W的2.1μm波长。使用Inrad的商业ZGP晶体产生MIR波长。将用于MIR波长的HR反射镜插入Ho：YAG腔中，以形成腔内ZGP OPO。 Ho：YAG腔的后镜充当输出耦合器，对于MIR波长，R = 70％。通过调整ZGP的相位匹配角和调整OPO的腔长来优化MIR生成。腔内ZGP OPO的初步结果产生了大于1W的MIR波长。

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