激光雷达用高性能光纤激光器  

High-performance fiber lasers for LIDARs

作　　者：史伟[1,2] 房强 李锦辉 付士杰[1] 李鑫[1] 盛泉[1] 姚建铨[1,2] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津市现代激光与光学研究院,天津300384 [3]山东海富光子科技股份有限公司,山东威海264209

出　　处：《红外与激光工程》2017年第8期1-5,共5页Infrared and Laser Engineering

基　　金：863计划(2014AA041901);山东省自然科学基金(ZR2014FP015)

摘　　要：系统研究了窄线宽低噪声单频连续光纤激光器、高能量纳秒长脉冲单频光纤激光器以及高峰值功率纳秒短脉冲光纤激光器三类高性能光纤激光器:实现了工作于1、1.5及2μm波段的单频连续光纤激光器,典型光谱线宽小于3 k Hz,强度噪声接近于散粒噪声极限;实现了高能量单频光纤激光器,脉冲能量超过200μJ,重复频率20 k Hz,脉冲宽度100~500 ns,激光波长位于1.5μm波段;实现了高峰值功率纳秒短脉冲光纤激光器,峰值功率超过700 k W,重复频率10 k Hz,脉冲宽度3 ns;同时还实现了高重频高峰值功率纳秒短脉冲光纤激光器,峰值功率超过200 W,重复频率3 MHz,脉冲宽度1~5 ns。文中阐述了以上几类高性能光纤激光器在激光雷达探测系统中的应用前景。Three kinds of high-performance fiber lasers were systematically investigated including the single frequency continuous wave （CW） fiber lasers with narrow linewidth and low relative intensity noise （RIN）, the high energy long-nanosecond-pulsed single frequency fiber lasers and the high peak power short-nanosecond-pulsed fiber lasers. The single frequency CW fiber lasers operating in 1μm, 1.5 μm and 2 μm regions were developed. The typical spectral linewidth was less than 3 kHz and the RIN approached the short noise limit. One high energy nanosecond pulsed single frequency fiber laser in 1.5 μm region was developed. It can produce 200 μJ single frequency laser pulses with 100-500 ns pulse width at 20 kHz repetition rate. A fiber laser producing pulses with 700 kW peak power, 3 ns pulse width at 10 kHz was developed. High repetition rate （up to 3 MHz） nanosecond fiber lasers was also developed, which can provide 1-5 ns laser pulses with 200 W peak power. The applications of these lasers in laser LIDARs are addressed in this paper.

关 键 词：光纤激光器 单频 纳秒激光脉冲 高能量 窄线宽 高峰值功率 

分 类 号：TN248.1[电子电信—物理电子学]