HIGH BRIGHTNESS 1908nm TM-DOPED FIBER LASER WITH POWER SCALING TO >75W

Authors : Salih Kağan KALYONCU

Pages : 216-222

Doi:10.18038/estubtda.1072801

View : 10 | Download : 9

Publication Date : 2022-09-27

Article Type : Research Paper

Abstract :In this paper, we have studied monolithic diode-pumped Tm-doped fiber laser to be used as a pump source for Ho-YAG systems. The cavity is designed to achieve high optical-to-optical efficiency and robustness against amplified spontaneous emission insert ignore into journalissuearticles values(ASE); induced parasitic lasing via optimizing the doped fiber length and cavity parameters. Experimentally, we have demonstrated 1907.7 nm fiber laser with an output power of 79 W from 10/130 μm Tm-doped double clad fiber, enabling high brightness and radiance density as well. The laser cavity has a slope efficiency of ~55%, ASE suppression of > 40 dB and a near-diffraction-limited beam quality of M2~1.07.
Keywords : Thulium doped fiber lasers, mid IR lasers, parasitic lasing