摘要
掺铥光纤激光可调谐范围宽、人眼安全、非线性阈值高,功率提升潜力大,在遥感、激光雷达、医疗、光学参量振荡等领域具有重要的应用。主要报道了国内外在连续、脉冲掺铥光纤激光方面的进展。目前连续掺铥光纤激光已经实现1kW的输出,其中单频连续掺铥光纤激光实现了608W的输出,如果进一步采用高功率、高亮度的半导体激光作为抽运源,增多放大级,则有望实现更高功率的激光输出。在脉冲激光方面,采用调Q方式实现了重复频率100kHz,单脉冲能量360μJ的纳秒脉冲输出;采用锁模方式实现了重复频率为37MHz,脉宽为1.32ps,平均功率为3.4mW的输出。最后对掺铥光纤激光的未来发展进行了展望。
In recent years,Tm-doped fiber laser aroused much attention for its superior properties such as wide tunable range,eye-safe and high nonlinear threshold.Compared with Yb-doped fiber laser,Tm-doped fiber laser is of great advantage in power rising,which has significant application prospects in remote sensing,laser radar,medical care,optical parametric oscillation and other fields.The progress of continuous-wave（CW）and pulsed Tm-doped fiber laser at home and abroad is reported.At present,CW Tm-doped fiber laser has achieved 1 kW output,and single-frequency Tm-doped fiber laser has achieved 608 W output.Moreover,higher laser output will be achieved if high-power high-brightness LD pump source and multi-stage amplifier configuration are used.With Q-switched technology,the repetition rate of pulsed laser achieves 100 kHz,and the single nanosecond pulse energy reaches 360 μJ;with mode-locked technology,the repetition rate of pulsed laser achieves 37 MHz and the average power of the picosecond pulse reaches 3.4 mW.Finally,the trend of Tm-doped fiber laser is discussed.
出处
《激光与光电子学进展》
CSCD
北大核心
2010年第10期21-31,共11页
Laser & Optoelectronics Progress
基金
国防科学技术大学优秀研究生创新基金(S090701)资助课题
关键词
激光器
连续掺铥光纤激光
脉冲掺铥光纤激光
交叉弛豫
非线性阈值
lasers
continuous-wave Tm-doped fiber laser
pulsed Tm-doped fiber laser
cross relaxation
non-linear threshold
