Self-Focusing and Optical Bistability in Cd1-xMnxTe |
| L. Kowalczyk, A. Suchocki and R.R. Gałązka Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland |
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| Thermally induced self-focusing of laser beam and optical bistability in CdMnTe at room temperature has been investigated. Photothermal focal length as a function of intensity of laser radiation has been measured in Cd1-xMnxTe for 0.3 ≤ x ≤ 0.6. The time-dependence of the transmitted power for various laser intensities has been investigated and the switching from the transparent to dark state has been observed. For the first time the optical bistable characteristic has been measured in CdMnTe. The results indicate that CdMnTe is a suitable material for cavityless, large contrast, thermally induced absorptive bistable operation in visible region. |
| DOI: 10.12693/APhysPolA.84.519 PACS numbers: 42.65.Jx |