Acta Photonica Sinica, Volume. 46, Issue 10, 1014001(2017)
Analysis of Heat Source of Relaxation and Quenching in Alkali Vapor Laser Pumped by Laser Diodes
A physical model of diode-pumped alkali vapor lasers, which combines the rate equations of population densities, the axial differential equations of pump and laser power, the radial differential equation of temperature, is reported in this paper. Taking into account the measured distributions of the pump and laser beam radii and the hypothetical distributions of the intensities, this model not only reproduces the observed peak temperature of 346℃, 480℃ and 696℃, which respectively correspond to pump powers of 50 W, 220 W and 370 W for the lasing condition, but also reproduces the observed peak temperature of 321℃, 414℃ and 609℃ corresponding to the same pump powers for the non-lasing condition. A wide region of heat source density of quenching is observed. For the lasing condition, quenching contributes approximately 85% of the total heat energy, whereas for the no-lasing condition it occupies over 95%, showing that quenching is very important and non-ignorable in temperature calculation.
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YANG Jing, WANG Gao-liang, ZHANG Yun-li, FENG Ya-min, LI Ji-tao, LUO Liu-min. Analysis of Heat Source of Relaxation and Quenching in Alkali Vapor Laser Pumped by Laser Diodes[J]. Acta Photonica Sinica, 2017, 46(10): 1014001
Received: May. 10, 2017
Accepted: --
Published Online: Nov. 24, 2017
The Author Email: Jing YANG (yangjing0410@zju.edu.cn)