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Stimulated emission of free excitons in Cd1−xMnxTe under nonresonant two-photon excitation |
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| Authors: | JI Jang S Mani HY Park |
| Institution: | a Department of Physics and Astronomy, Northwestern University, 2145 Sheridan Road, Evanston, IL 60208, USA b Department of Semiconductor Applications, Ulsan College, San 29 Mugeo Dong, Ulsan 680-749, South Korea |
| Abstract: | We report on free excitons coexisting with exciton magnetic polarons (EMPs) in bulk semimagnetic semiconductors of Cd1−xMnxTe for 0.04?x?0.36 at 2 K under nonresonant two-photon excitation. This two-photon excitation not only generates free excitons but also more efficiently creates EMPs compared with ordinary one-photon excitation. Stimulated emission from free excitons is demonstrated under strong two-photon excitation. |
| Keywords: | Cd1&minus xMnxTe Free excitons Stimulated emission Magnetic polarons Two-photon excitation |
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