Title :
Study on spectral characteristics and operating parameters of optically pumped NH3 FIR cavity laser
Author :
Qin, Jiayin ; Zheng, Xingshi ; Luo, Xizhang ; Huang, Xiao ; Lin, Yikun
Author_Institution :
Dept. of Eng., Zhongshan Univ., Guangzhou, China
fDate :
1/1/1998 12:00:00 AM
Abstract :
By solving the density matrix equations of a quantum system and taking into account the multibeam interference characteristics of a Fabry-Perot cavity, the output power density of an optically pumped NH 3 far-infrared (FIR) cavity laser was calculated by means of the iteration method. Based on the calculations, the spectral characteristics and operating parameters of the laser were studied. Experimentally, by using inductive metallic meshes as reflectors and couplers, a series of FIR cavity lasers with a sample tube of 10, 20, and 100 cm in length were designed and constructed, and the emissions of the NH3 cavity lasers pumped by a TEA-CO2 laser with a 10R(8) or 9R(16) line were measured. The experimental results were in good agreement with theoretical calculations
Keywords :
Fabry-Perot resonators; ammonia; gas lasers; iterative methods; laser cavity resonators; laser mirrors; laser transitions; optical pumping; submillimetre wave lasers; 10 cm; 100 cm; 20 cm; CO2; Fabry-Perot cavity; NH3; TEA-CO2 laser pump; couplers; density matrix equations; emissions; far-infrared; inductive metallic meshes; iteration method; multibeam interference characteristics; operating parameters; optically pumped NH3 FIR cavity laser; output power density; quantum system; reflectors; sample tube; spectral characteristics; Equations; Fabry-Perot; Finite impulse response filter; Interference; Laser excitation; Laser theory; Optical pumping; Power generation; Power lasers; Pump lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
