增益开关锁模2μm铥/钬共掺光纤激光器  

Gain-switched and mode-locked 2 μm Tm/Ho-codoped fiber laser

作　　者：杨未强[1] 张斌[1] 侯静[1] 宋锐[1] 刘泽金[1] 

机构地区：[1]国防科学技术大学光电科学与工程学院,长沙410073

出　　处：《强激光与粒子束》2012年第11期2521-2522,共2页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(61077076);科技部国际科技合作专项项目(2012DFG11470)

摘　　要：首次报道了中心波长为1958nm的增益开关锁模铥/钬共掺光纤激光器,增益开光脉冲包络和锁模次脉冲的重复频率分别为20kHz和14.8MHz。将此增益开关锁模光纤激光作为种子源,在掺铥光纤放大器中产生了平坦的超连续谱光源。超连续谱的最大输出功率为2.17 W,其长波长边已扩展到2750nm,10dB带宽约为640nm(光谱范围1953～2593nm)。Gain-switched by 1550 nm pulsed laser, a simultaneously gain-switched and mode-locked Tm/Ho-codoped fiber laser with a central wavelength of 1958 nm is obtained. The pulse train contains many mode-locked sub-pulses within one gain-switched pulse envelope. Using this pulsed laser as a seed source, a flat supercontinuum （SC） is generated in a Tm-doped fiber amplifier where Tm-doped fiber is both the non-linear and gain medium. For the average output power of 2.17 W, the observed spectrum covers the spectral range of 1953 to 2593 nm with a 10 dB bandwidth of 640 nm and the long wavelength edge of SC spectrum is extended to 2750 nm.

关 键 词：光纤激光器 增益开关 锁模 掺铥光纤放大器 超连续谱产生 

分 类 号：TN212[电子电信—物理电子学] TN248