Open AccessExperimental investigation on a diode-pumped cesium-vapor laser stably operated at continuous-wave and pulse regime
Author(s) -
Fei Chen,
Dongdong Xu,
Fei Gao,
Chaoyue Zheng,
Kuo Zhang,
Yang He,
Chunrui Wang,
Jin Guo
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.012414
Subject(s) - materials science , optics , laser , output coupler , caesium , diode , wavelength , continuous wave , pulse (music) , pulse duration , laser diode , optoelectronics , physics , detector , nuclear physics
Employing a fiber-coupled diode-laser with a center wavelength of 852.25 nm and a line width of 0.17 nm, experimental investigation on diode-end-pumped cesium (Cs) vapor laser stably operated at continuous-wave (CW) and pulse regime is carried out. A 5 mm long cesium vapor cell filled with 60 kPa helium and 20 kPa ethane is used as laser medium. Using an output coupler with reflectivity of 48.79%, 1.26 W 894.57 nm CW laser is obtained at an incident pump power of 4.76 W, corresponding an optical-optical efficiency of 26.8% and a slope-efficiency of 28.8%, respectively. The threshold temperature is 67.5 °C. Stable pulsed cesium laser with a maximum average output power of 2.6 W is obtained at a repetition rate of 76 Hz, and the pulse repetition rate can be extend to 1 kHz with a pulse width of 18 μs.