Title :
Miniaturization of pulsed optically pumped CH3OH far infrared laser
Author :
Xiao Buang ; Xingshi Zheng ; Qin, Jiayin ; Qiu, Ruman ; Luo, Xizhang ; Lin, Yikun
Author_Institution :
Dept. of Electron., Zhongshan Univ., Guangzhou, China
Abstract :
A miniature optically pumped CH3OH FIR laser (CH3 OH-OH-OPFIRL), which used a pair of metallic meshes as “mirrors” for Fabry-Perot cavity, with variable sample tubes in lengths from 1.0 m to 0.2 m or 0.1 m was constructed. When pumped by a TEA-CO2 laser 9P(16) line, FIR laser lines of 570 μm, 369 μm and 918 μm wavelength were obtained, and the latter was a new line. By solving the density matrix equations of a quantum system, the output power intensity of the CH3OH-OPFIRL was calculated by means of an iteration method, and the spectral characteristics were obtained. The relation of the output power intensity versus operating parameters of the FIR laser was studied. A series of FIR emissions of the CH3OH cavity laser were measured and some peaks were observed by using a scanning F-P interferometer
Keywords :
Fabry-Perot resonators; gas lasers; iterative methods; laser cavity resonators; laser transitions; optical pumping; submillimetre wave lasers; 0.1 to 1.0 m; 369 micrometre; 570 micrometre; 918 micrometre; Fabry-Perot cavity; density matrix equations; far infrared laser; iteration method; metallic meshes; methanol; operating parameters; output power intensity; pulsed optically pumped laser; quantum system; scanning F-P interferometer; spectral characteristics; variable sample tubes; Equations; Fabry-Perot; Finite impulse response filter; Laser excitation; Optical interferometry; Optical pulses; Optical pumping; Power generation; Power lasers; Pump lasers;
Conference_Titel :
Microwave and Millimeter Wave Technology Proceedings, 1998. ICMMT '98. 1998 International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4308-5
DOI :
10.1109/ICMMT.1998.768275
