Spectroscopy, modeling, and laser operation of thulium-doped crystals at 2.3 μm

Vikas Sudesh, J. A. Piper

Research output: Contribution to journalArticle

50 Citations (Scopus)

Abstract

Pulsed room-temperature lasers based on the thulium 2.3-μm 3H 4- 3H 5 transition have been achieved in 1.5% Tm:YAG, 2% Tm:LuAg, and 1.5% Tm:YLF crystals using a pulsed alexandrite laser at 785 nm as the pump source in a collinear geometry. The absorbed energy thresholds (slope efficiencies) for 1.5% Tm:YAG, 2% Tm:LuAg, and 1.5% Tm:YLF lasers are measured to be 1.2 mJ (14%), 1.8 mJ (13%), and 1.0 mJ (18%), respectively, which are in good agreement with the theoretically predicted results. The experimental results indicate 1.5% thulium to be the most optimum concentration for 2.3-μm laser action. The thulium lasers are tuned around 2.3 μm using an intracavity single birefringent plate of quartz.

Original languageEnglish
Pages (from-to)879-884
Number of pages6
JournalIEEE Journal of Quantum Electronics
Volume36
Issue number7
DOIs
Publication statusPublished - Jul 2000

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