Title :
Study on spectral characteristics of AC Stark splitting in optically pumped NH3 FIR laser
Author :
Jiayin, Qin ; Cong, Li ; Xingshi, Zheng ; Yikun, Lin
Author_Institution :
Submillimeter Wave Laser Lab., Zhongshan Univ., Guangzhou, China
Abstract :
AC-Stark splitting plays an important role in optically pumped gas lasers, especially in the case of a miniature OPFIRL pumped by a TEA-CO 2 laser. The characteristics of the AC-Stark spectrum in NH 3-OPFIRL were studied, as an example. The transition a→´sQ(5,4) of the 291 μm line was presented. The AC-Stark splitting depends upon the operating gas pressure and pumping power. Usually, the Raman processes are sensitive to the pumping power and gas pressure, so that the Raman line of the AC-Stark splitting changes rapidly. It dominates the spectral characteristics and output performance of the OPFIRL
Keywords :
Raman lasers; Stark effect; ammonia; gas lasers; laser transitions; optical pumping; submillimetre wave lasers; AC Stark splitting; FIR laser; NH3; Raman line; Raman processes; gas lasers; miniature OPFIRL; operating gas pressure; optical pumping; pumping power; spectral characteristics; Finite impulse response filter; Frequency; Gas lasers; Laser excitation; Laser transitions; Optical pumping; Power lasers; Pump lasers; Stark effect; Stimulated emission;
Conference_Titel :
Millimeter Wave and Far Infrared Science and Technology, 1996. Proceedings., 4TH International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-3619-4
DOI :
10.1109/ICMWFT.1996.574863
