Differential Absorption Lidar (DIAL) Using a Broadly TunableCr:LiSAF Laser

9361077阿查尔卡可调谐相干390 nm至3.5um光源有许多应用，但在该地区没有可调谐的激光光源，也很少有离散的激光谱线。使用钛蓝宝石激光器和倍频的方法调谐能力有限，但这种方法存在转换效率低、体积大和重量大等缺点。在这项第一阶段的研究中，Schwartz Electro-Optics，Inc.(SEO)提出了一种工作在0.78-1.0um的Cr：LiSAF激光器，作为光学参数振荡器(OPO)的泵浦激光器和用于产生0.39-3.5um可调谐光源的倍频发生器(SHG)。SEO制造了一种高功率闪光灯泵浦的调Q铬：LiSAF激光器(激光1-2-3型)。在这项研究中，这种激光器将免费用于该计划。我们将评估用激光二极管泵浦Cr：LiSAF以减小激光器尺寸和重量并提高可靠性的概念。在第二阶段计划中，二极管泵浦的全固态、宽可调的激光光源将用于遥感拨号系统的设计、制造和测试。*。

9361077 Achaerkar There are many applications for a tunable coherent 390 nm to 3.5 um source but there are no tunable laser sources and very few discrete laser lines in this region. By using a titanium sapphire laser and frequency doubling there is limited tunability but this approach suffers for poor conversion efficiency, large size and weight. In this Phase I study, Schwartz Electro- Optics, Inc. (SEO) proposes a Cr:LiSAF laser operating at 0.78-1.0 um as a pump laser for an Optical Parametric Oscillator (OPO) and a Second Harmonic Generator (SHG) for the generation of 0.39-3.5 um tunable source. SEO manufactures a high power flashlamp pumped Q-switched Cr:LiSAF laser (model Laser 1-2-3). For this study this laser will be used at no cost to the program. The concept of pumping Cr:LiSAF with a laser diode to reduce laser size and weight and improve reliability will be evaluated. In Phase II program, the diode pumped, all solid state, broadly tunable laser source will be used in the desiqn, fabrication, and test of a DIAL system for remote sensing. *** .