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Optlcal bistability In Cr:LiSGaF, and Cr:LISAF, laser crystals

Howard M. Milchberg, Mikhail A. Noginov, Martina Vondrova

Published Jan 1, 2001• 0 citations
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Summary form only given. An intrinsic optical bistability can find potential applications in optical logic elements and switches for optical computing, telecommunication, etc. The effect can be predicted in many different systems with various physical mechanisms of nonlinearity. The bistability derived as a consequence of modification of the optical Bloch equations after introducing the local field correction terms, was first experimentally observed in Yb/sup 3+/:Cs/sub 3/ Y/sub 2/Br/sub 9/. We theoretically predict and experimentally demonstrate an intrinsic bistability in luminescence and transmission of Cr doped LiSrGaF/sub 6/ (LiSGaF) and LiSrAlF/sub 6/ (LiSAF) crystals, in which the luminescence quantum yield has a strongly nonlinear dependence on temperature T.

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A very strong nonlinearity in the temperature dependence of the luminescence quantum yield in the Cr:LiSrGaF6 and Cr:LiSrAlF6 laser crystal can lead to a temperature induced intrinsic optical bistability in these materials. The bistability and the hysteresis loop in the dependence of the Cr luminescence intensity and the transmission of the crystal on cw pumping power has been theoretically predicted and experimentally observed. The experimental results are in a good agreement with the theoretical prediction.

Advanced Solid-State Lasers•Jan 1, 2001•0 citations
Summary form only given. An intrinsic optical bistability can find potential applications in optical logic elements and switches for optical computing, telecommunication, etc. The effect can be predicted in many different systems with various physical mechanisms of nonlinearity. The bistability derived as a consequence of modification of the optical Bloch equations after introducing the local field correction terms, was first experimentally observed in Yb/sup 3+/:Cs/sub 3/ Y/sub 2/Br/sub 9/. We theoretically predict and experimentally demonstrate an intrinsic bistability in luminescence and transmission of Cr doped LiSrGaF/sub 6/ (LiSGaF) and LiSrAlF/sub 6/ (LiSAF) crystals, in which the luminescence quantum yield has a strongly nonlinear dependence on temperature T.
A very strong nonlinearity in the temperature dependence of the luminescence quantum yield in the Cr:LiSrGaF6 and Cr:LiSrAlF6 laser crystal can lead to a temperature induced intrinsic optical bistability in these materials. The bistability and the hysteresis loop in the dependence of the Cr luminescence intensity and the transmission of the crystal on cw pumping power has been theoretically predicted and experimentally observed. The experimental results are in a good agreement with the theoretical prediction.