16 April 2018 Excitonic absorption and emission in diamond near the edge of fundamental absorption
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Proceedings Volume 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII; 106141H (2018) https://doi.org/10.1117/12.2307089
Event: XIII International Conference on Atomic and Molecular Pulsed Lasers, 2017, Tomsk, Russia
Abstract
The study of optical absorption of CVD diamond near the fundamental absorption edge was performed in the temperature range of 87-296 K. At temperatures lower than 195 K the absorption was practically constant. At higher temperatures the sharp increase of absorption took place. This sharp increase was attributed to the sharp enrichment of the phonon spectrum. Same phonon modes have different contributions to the negative and the positive branches of freeexciton absorption. For the negative branch (phonon absorption) the TA-mode dominated. For the positive branch (phonon emission) the TO-mode dominated. The possibility of diamond-based cathodoluminescent UV-sources at 235 nm was demonstrated.
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E. I. Lipatov, E. I. Lipatov, K. R. Burumbayeva, K. R. Burumbayeva, D. E. Genin, D. E. Genin, V. S. Ripenko, V. S. Ripenko, M. A. Shulepov, M. A. Shulepov, V. F. Tarasenko, V. F. Tarasenko, } "Excitonic absorption and emission in diamond near the edge of fundamental absorption", Proc. SPIE 10614, International Conference on Atomic and Molecular Pulsed Lasers XIII, 106141H (16 April 2018); doi: 10.1117/12.2307089; https://doi.org/10.1117/12.2307089
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