ANALYSES OF OUTPUT CHARACTERISTICS FOR FOUR-LEVEL SYSTEM LASER
Huang Li-lei (黄莉蕾)a, Fang Da-wei (方达伟)a, Hong Zhi (洪治)b
a Optoelectronic Divition, China Institute of Metrology, Hangzhou 310034, China; b Department of Optoelectronics Engineering, Zhejiang University, Hangzhou 310027, China
Abstract From transition-rate-equations and transmission-equations the formulas of threshold power and slope efficiency of an end-pumped laser for a four-level system are deduced. Citing the laser of Er:YAG as an example, we have discussed the differences of laser output characteristics between the three-and four-level systems.
Received: 23 October 1998
Revised: 17 January 1999
Accepted manuscript online:
PACS:
42.55.Rz
(Doped-insulator lasers and other solid state lasers)
(Resonators, cavities, amplifiers, arrays, and rings)
Fund: Project supported by the Natural Science Foundation of Zhejiang Province (Grant No. 694043) and by the State Key Laboratory of Zhejiang University (Grant No. LM01-9806), China.
Cite this article:
Huang Li-lei (黄莉蕾), Fang Da-wei (方达伟), Hong Zhi (洪治) ANALYSES OF OUTPUT CHARACTERISTICS FOR FOUR-LEVEL SYSTEM LASER 1999 Acta Physica Sinica (Overseas Edition) 8 449
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