Abstract

We developed a stable, narrow spectral line-width, fiber delivered laser source for spin exchange optical pumping. An optimized external cavity equipped with an off-the-shelf volume holographic grating narrowed the spectral line-width of a 100 W high-power diode laser and stabilized the laser spectrum. The laser spectrum showed a high side mode suppression ratio of $>30\mathrm{dB}$ and good long-term stability (center wavelength drifting within $\pm 0.002\mathrm{nm}$ during 220 h of operation). Our laser is delivered by a multimode fiber with power $\sim 70\mathrm{W}$, center wavelength of 794.77 nm, and spectral bandwidth of $\sim 0.12\mathrm{nm}$.

2  kW narrow spectral width monolithic continuous wave in a near-diffraction-limited fiber laser

Yang Xu, Qiang Fang, Yuguo Qin, Xiangjie Meng, and Wei Shi
Appl. Opt. 54(32) 9419-9421 (2015)

Spectral linewidth narrowing and tunable two-color laser operation of two diode laser arrays

Bo Liu and Yehuda Braiman
Appl. Opt. 51(11) 1816-1821 (2012)

Wavelength locking in a large-smile diode-laser array using dual-beam transformation systems

Bin Liu, Hui Liu, Fenning Chen, Haiyan Li, and Xingsheng Liu
Appl. Opt. 59(11) 3399-3403 (2020)

18W ultra-narrow diode laser absolutely locked to the Rb D₂ line

Hao Tang, Huizi Zhao, Rui Wang, Liang Li, Zining Yang, Hongyan Wang, Weiqiang Yang, Kai Han, and Xiaojun Xu
Opt. Express 29(23) 38728-38736 (2021)

Linewidth reduction in a large-smile laser diode array

C. L. Talbot, M. E. J. Friese, D. Wang, I. Brereton, N. R. Heckenberg, and H. Rubinsztein-Dunlop
Appl. Opt. 44(29) 6264-6268 (2005)