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报道了一种单纤单振单模连续全光纤激光器,工作波长为1 080nm,输出功率可达1.63kW。激光器使用7个输出功率为300 W、工作波长为976nm的半导体激光器(LDs)充当泵浦源,并利用短腔长结构成功地抑制了受激拉曼散射(SRS)。测试结果显示,所获得激光的光谱信噪比(SNR)大于40dB,1h内的功率不稳定度小于1%,光-光转换效率约为75.46%。此外,通过对光纤盘绕的合理设计,有效地抑制了光纤中的高阶模式,在满功率输出时成功地获得了单模激光(M2<1.1)。
Reported a single fiber single mode single mode continuous all-fiber laser working wavelength of 1 080nm, the output power of up to 1.63kW. The lasers used seven semiconductor lasers (LDs) with an output power of 300 W and a working wavelength of 976 nm as pump sources and successfully suppressed stimulated Raman scattering (SRS) with a short cavity length structure. The test results show that the obtained laser has a spectral signal-to-noise ratio (SNR) of more than 40 dB, a power instability within 1 hour of less than 1% and a light-to-light conversion efficiency of about 75.46%. In addition, by reasonably designing the optical fiber coil, the high-order mode in the optical fiber is effectively suppressed, and the single-mode laser (M2 <1.1) is successfully obtained at full power output.