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

使用广泛可调谐 Cr:LiSAF 激光器的差分吸收激光雷达 (DIAL)

• 批准号: 9361077
• 负责人: Madhu Acharekar
• 金额: $ 6.4万
• 依托单位: Schwartz Electro-Optics Inc Orlando Headquarters
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-02-01 至 1994-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9361077&HistoricalAwards=false
• 关键词: Differential; Absorption; Lidar; DIAL; Using

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. *** .

对于可调谐相干390 nm至3.5 μ m光源有许多应用，但是在该区域中没有可调谐激光源并且很少有离散激光线。通过使用钛蓝宝石激光器和倍频，存在有限的可调谐性，但是这 这种方法的缺点是转换效率低、体积大和重量重。 在该I期研究中，Schwartz Electro- Optics，Inc. (SEO)提出了一种工作在0.78-1.0 μ m的Cr：LiSAF激光器，作为光参量振荡器（OPO）的泵浦激光器和用于产生0.39-3.5 μ m可调谐光源的二次谐波发生器（SHG）。 SEO制造了高功率闪光灯泵浦Q开关Cr：LiSAF激光器（型号Laser 1-2-3）。 在本研究中，将免费使用该激光器。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调谐激光源将用于遥感DIAL系统的设计、制造和测试。 *** .