Effect of pump laser intensity on optically pumped D2O gas terahertz laser

Zhi Hong He, Jian Quan Yao, Hua Feng Shi, Xiao Huang, Xi Zhang Luo, Shao Ji Jiang, Jian Rong Li, Peng Wang

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Based on the semi-classical theory, the pulsed-laser pumped D2O gas tera-Hz laser was theoretically analyzed, the relation between the intensity of pumping laser and the output tera-Hz laser light was studied and numerically calculated. According to the result of calculation, the intensity of the output tera-Hz laser light increased approximately linearly with that of the input laser in a certain range, but gradually decreased because of the bottleneck effect when the intensity of the input laser exceeded a fixed value, and for given gas pressure, cavity length and operating temperature, an optimal intensity of pumping laser exists. A frequency tuning range of the output signal occurred when the intensity of the input laser was strong enough.

Original languageEnglish
Pages (from-to)6451-6456
Number of pages6
JournalWuli Xuebao/Acta Physica Sinica
Volume56
Issue number11
StatePublished - Nov 2007
Externally publishedYes

Keywords

  • DO gas molecule
  • Semi-classical theory
  • Stimulated Raman emission
  • Terahertz (THz)

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