cw double cross pumping of the 5I7–5I8 laser transition in Ho3+-doped garnets

Duczynski, E. W.; Huber, G.; Ostroumov, V. G.; Shcherbakov, I. A.
June 1986
Applied Physics Letters;6/9/1986, Vol. 48 Issue 23, p1562
Academic Journal
We obtained for the first time efficient room-temperature cw lasing at 2.086 μm in Cr,Tm,Ho:YScAl-garnet and Cr,Tm,Ho:YScGa-garnet crystals. Double cross pumping via Cr3+ and Tm3+ with a krypton pump laser yields threshold pump powers of 25 mW and slope efficiencies up to 13%. Broad band pumping can also be expected.


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