首页》回顾》金属结构件的高性能快速响应激光修复技术

Developing Status of Single Frequency Narrow linewidth High energy Hybrid Solid-state Laser Amplifier

演讲课题:Developing Status of Single Frequency Narrow linewidth High energy Hybrid Solid-state Laser Amplifier

演讲人:陈卫标Weibiao Chen

演讲摘要:

Single frequency, narrow linewidth, high energy all solid-state lasers are required for high spectral resolution atmospheric remote sensing. Two or several wavelengths with high energy are used to monitor green-house gas concentration. This kind of laser is based on OPO and OPA with nonlinear crystal. Injection seeding technology is frequently used to achieve single frequency output. While this kind of laser has narrow pulse width and poor energy stability. In the high energy OPA laser, the time delay between pumping OPO and OPA is realized by free space optics. While it is quite un-stable during laser’s long term operation. In this presentation, a single frequency, narrow linewidth multi-wavelength with hybrid amplifier of fiber and bulk crystal is developed. The laser is consisted of frequency stabled multi-wavelength seeder laser. The seeder laser is pulsed modulated and amplified by Yb Doped fiber. Two fiber pre-amplifiers is to pump OPO and OPA, respectively. The time delay between pumping OPO and OPA can be easily to use the length of fiber. The OPA pumping source is consisted of three Nd:YAG slab amplifiers. OPO and OPA at 1572 nm and 2051 nm are demonstrated respectively. And the remained 1064 nm laser is frequency doubled and tripled to output 532 nm and 355 nm with high energy. Thus, this kind of laser can output several wavelength for atmospheric remote sensing of gas, aerosol , cloud and molecule at same time. Both airborne and spaceborne laser will be presented for atmosphere lidar.

陈卫标Weibiao Chen

Professor, Shanghai Institute of Optics and Fine Mechanics

Dr. Chen Weibiao, is a professor of Shanghai institute of Optics and Fine Mechancis, CAS.  He is also the director of the Key Laboratory of Space Laser communication and lidar Technology of the Chinese Academy of Sciences. He is a member of the Laser Technology and Space Optics Special Committee of Chinese Optics Society, and member of the Chinese Opt-engineering Society. He is awarded of “One Hundred Person Plan” of CAS, and the national "Ten Thousand People Plan". In recent years, he has won two first prize of the Shanghai Science and Technology Progress Award, published more than 100 papers, and achieved more than 40 patents.

He has long devoted himself to the science and laser technology research of space atmospheric and marine laser remote sensing. The development of China's space all-solid-state laser technology has undertaken most of the laser development tasks in laser remote sensing in China, providing core devices for China's lunar exploration project, Fengyun Meteorological Satellite, other spacecrafts.

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