Continuous-Wave Alkali Vapor Laser Pumped by a Ti-sapphire Laser with Narrow Linewidth

6th conference on Advances in Optoelectronics and Micro/nano-optics

Cai, H.^1 ; An, G.F.^1 ; Dai, K.^2 ; Wang, Y.^1 ; Zhang, W.^1 ; Han, J.H.^1 ; Rong, K.P.^1 ; Yu, H.^1 ; Wang, S.Y.^1 ; Wang, H.Y.^1 ; Xue, L.P.^1 ; Zhou, J.^1

Southwest Institute of Technical Physics, Chengdu, SICHUAN

610041, China^1

School of Physics Science and Technology, Xinjiang University, Urumqi

830046, China^2

关键词: Cell temperature;    Continuous wave alkali vapor lasers;    Maximum output power;    Narrow-line width;    Optical-to-optical efficiency;    Optimal parameter;    Polarized beam splitters;    Transmission attenuations;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012052/pdf
DOI  :  10.1088/1742-6596/844/1/012052

来源: IOP

【 摘 要 】

We have experimentally demonstrated the continuous wave rubidium and cesium lasers pumped by a Ti-sapphire laser with the linewidth of about 5 MHz. The pump and laser beams were orthogonally polarized and they can be separated by a polarized beam splitter (PBS). Two 4-cm-long cells were respectively filled with metallic rubidium and cesium as well as 300 Torr ethane as a buffer gas. A series of output couplers at different cell temperatures have been used and the optimal parameters have been found for earning the highest output. As a result, we have achieved a maximum output power of 111 mW with the optical to optical efficiency of 18.4% for a rubidium laser and a maximum output power of 136 mW with the optical to optical efficiency of 30% for a cesium laser, respectively. By considering there are no anti-reflection coatings on the surfaces of two cell end-windows, the output should be improved if the transmission attenuation is effectively decreased in the future.