High-Efficiency Room-Temperature 2.06-μm Laser Using Sensitized Ho3+:YLF

15 August 1971

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 19 (4) , 119-121
https://doi.org/10.1063/1.1653837

Abstract

Pulsed room‐temperature laser action at 2.06 μm has been achieved using Ho³⁺:YLF (LiF₄) sensitized with Er³⁺ and Tm³⁺. An unoptimized cavity gave a threshold of 35 J and a slope efficiency of 1.3% in normal mode with an output mirror of 62% T. A slope efficiency of 2% and a 65‐J threshold were observed in Q‐switched operation along with Q‐switched energy of >500 mJ from a 0.9×⅛‐in. rod. The sensitizer ions have broad absorption bands and transfer times (to the active ion) of 150–200 μsec.

Keywords

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