15 December 2015 Optical spectra and radiative recombination of electron-hole liquid in diamonds
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Proceedings Volume 9810, International Conference on Atomic and Molecular Pulsed Lasers XII; 98100R (2015) https://doi.org/10.1117/12.2224410
Event: XII International Conference on Atomic and Molecular Pulsed Lasers, 2015, Tomsk, Russian Federation
Abstract
In our work we investigated different optical characteristics of five diamond samples that were supposed to be pure. The characteristics were the following: optical absorption spectra in the range 200 nm – 15μm, Raman scattering spectra in the range 100-3700 cm-1 and photoluminescence spectra in the range 200 – 850 nm. The temperature of diamond samples was varied from 80 to 300 K. Photoluminescence was excited by KrCl*-laser radiation (λ=222 nm) with pulsewidth of 8 ns (FWHM) and peak intensity of 13 MW/cm2. We found out that the band of radiative recombination of the electron-hole liquid (with the maximum at 240 nm) can be observed in the photoluminescence spectra if the absorption coefficient of the diamond sample is less than 10 cm-1 in the range 225-226 nm.
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E. I. Lipatov, E. I. Lipatov, D. E. Genin, D. E. Genin, V. F. Tarasenko, V. F. Tarasenko, } "Optical spectra and radiative recombination of electron-hole liquid in diamonds", Proc. SPIE 9810, International Conference on Atomic and Molecular Pulsed Lasers XII, 98100R (15 December 2015); doi: 10.1117/12.2224410; https://doi.org/10.1117/12.2224410
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