SBIR Phase II: Tunable, Narrowband, Long Wave Infrared LightSource

*95-28553 INRAD，Inc.。该小型企业创新研究(SBIR)第二阶段项目致力于3-12微米范围内波长的窄带、可广泛调谐的红外光源。这一光谱区域有丰富的分子特征，但在该区域还没有既强大又可广泛调谐的商业激光光源。第一阶段制作了基于二磷化锗锌的窄带、宽调谐光学参量振荡器(OPO)。第二阶段将构建一个功率更高、带宽更窄、可调范围更广的原型源。将寻求在涂层、从OPO中提取能量以及在光参量放大器(OPA)中放大方面的改进。对实际OPO/OPA系统的泵浦激光要求进行了研究。将建造一个原型系统，在具有窄光谱带宽的低发散光束中产生每脉冲几毫焦耳的可调谐、长波长红外光。3-12微米范围内的可调谐激光辐射将在环境研究和使用移动激光雷达系统的大气遥感中的分子物种研究中发挥重要作用。

*** 95-28553 INRAD, Inc. This Small Business Innovation Research (SBIR) Phase II project addresses a narrowband, widely tunable infrared light source of wavelengths in the 3-12 micron region. This spectral region is rich in molecular signatures, but there are no commercial laser light sources that are both powerful and broadly tunable in the region. Phase I produced a narrowband, widely tunable optical parametric oscillator (OPO) based on zinc germanium diphosphide. Phase II will construct a higher power, narrower bandwidth, more widely tunable prototype source. Improvement will be sought in coatings, the extraction of energy from the OPO, and amplification in an optical parametric amplifier (OPA). Pump laser requirements will be studied for a practical OPO/OPA system. A prototype system will be constructed that generates a few millijoules per pulse of tunable, long-wavelength infrared light in a low divergence beam with a narrow spectral bandwidth. Tunable laser radiation in the 3-12 micron range will be important in studies of molecular species in environmental research and atmospheric remote sensing that use mobile LIDAR systems.***