Analysis of the optimal temperature for the cryogenic monolithic Nd:YAG laser at 946-nm

C. Y. Cho, T. L. Huang, H. P. Cheng, Kai-Feng Huang, Yung-Fu Chen

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

The optimal temperature for the cryogenic monolithic Nd:YAG laser at 946-nm is theoretically and experimentally analyzed. It is clear that decreasing temperature can considerably eliminate the thermal population at the lower laser level to enhance the quantum efficiency. However, the narrowing of the absorption bandwidth for the gain medium leads to a reduction of the effective absorption efficiency as the temperature is decreased. Consequently, an optimal temperature for the maximum output power is found to be in the range of approximately 120 K to 140 K. It is experimentally verified that employing a pump source with a narrower emission spectrum linewidth contributes a more efficient output for the cryogenic laser.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalOptics Express
Volume24
Issue number1
DOIs
StatePublished - 11 Jan 2016

Keywords

  • DIODE-PUMPED NDYAG
  • SOLID-STATE LASERS
  • YAG LASER
  • DEPENDENCE

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