Abstract

Low-threshold operation of a 2.09-μm holmium laser, excited by nonradiative energy transfer from trivalent iron, has been demonstrated. With a 1.45-mm-thick crystal of Fe,Ho:YGG at 77 K, absorbed power thresholds between 5 and 8 mW were observed as the pump wavelength was continuously tuned from 0.92 to 0.97 μm.

© 1992 Optical Society of America

Intracavity-pumped 2.09-μm Ho:YAG laser

R. C. Stoneman and L. Esterowitz
Opt. Lett. 17(10) 736-738 (1992)

Mid-IR (4.4  μm) Zn_1−xMn_xSe:Cr²⁺,Fe²⁺ (x = 0.3) laser pumped by 1.7  μm laser using Cr²⁺-Fe²⁺ energy transfer

Maxim E. Doroshenko, Helena Jelínková, Adam Říha, Michal Jelínek, Michal Němec, Nazar O. Kovalenko, and Andrey S. Gerasimenko
Opt. Lett. 44(11) 2724-2727 (2019)

2.07-μm cw diode-laser-pumped Tm,Ho:YLiF₄ room-temperature laser

Hamid Hemmati
Opt. Lett. 14(9) 435-437 (1989)

Efficient resonantly pumped 2.8-μm Er³⁺:GSGG laser

R. C. Stoneman and L. Esterowitz
Opt. Lett. 17(11) 816-818 (1992)

Long-pulse 4.4–4.6 μm laser oscillations of Fe²⁺ ions in a Zn_1-xMn_xSe (x = 0.3) crystal pumped by a 1940 nm Tm fiber laser through Cr²⁺ → Fe²⁺ energy transfer

Maxim Doroshenko, Michal Jelínek, Adam Říha, Jan Šulc, Helena Jelínková, Václav Kubeček, Nazar O. Kovalenko, and Andrey S. Gerasimenko
Opt. Lett. 44(21) 5334-5337 (2019)