High-power, injection-seeded Ti:sapphire laser designed for frequency conversion of a 200-W diode-laser pumped laser system

本提案的主题是开发用于水蒸气遥感的高性能激光发射机的三个组件中的两个。第三个组件，一个独特的泵浦激光器，以前未实现的功率是本封装提案中提案1的主题。为了与如此高的单次脉冲能量的泵源兼容，对剩下的两个组件，变频器和稳频模块提出了极高的要求。第一个模块是平均功率为20瓦、总效率为10%的脉冲钛蓝宝石激光器。第二种是新颖的双频、可调注入播种模块，确保维护对Ti：蓝宝石激光器的光谱特性的要求。对于未来在不同平台上的常规和操作测量，必须达到超过当前系统一个数量级的功率水平。将对钛蓝宝石的热建模和热效应补偿进行创新性研究。将开发先进的谐振器配置，使激光操作具有优化的能量提取效率，高光束质量和差分吸收激光雷达（DIAL）测量所需的光谱特性。

The subject of this proposal is the development of two of the three components of a high-performance laser transmitter for water vapor remote sensing. The third component, a unique pump laser of formerly unachieved power is the subject of proposal 1 within this package proposal. To be compatible with a pump source of such a high single-shot pulse energy, extremely high requirements are set to the two remaining components, the frequency converter and the frequency stabilization modules. The first module ist a pulsed 20-W average power, 10 % overall efficiency Ti:sapphire laser. The second is novel dual-frequency, tunable injection-seeder module ensuring the maintenance of the requirements with respect to the spectral properties of the Ti:sapphire laser. For future routine and operational measurements on different platforms it is essential to reach this power level which exceeds current systems by one of magnitude. Innovative research with respect to thermal modeling and compensation of thermal effects of Ti:sapphire will be performed. Advanced resonator configurations will be developed permitting laser operation with optimized energy extraction efficiency, high beam quality and with the spectral properties required for differential absorption lidar (DIAL) measurements.