Optical spectra and radiative recombination of electron-hole liquid in diamonds
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2015-12-15 |
| Journal | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE |
| Authors | E. I. Lipatov, D. E. Genin, Š. Š¤. Š¢Š°ŃŠ°ŃŠµŠ½ŠŗŠ¾ |
| Institutions | Institute of High Current Electronics |
Abstract
Section titled āAbstractāIn 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<sup>-1</sup> 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/cm<sup>2</sup>. 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<sup>-1</sup> in the range 225-226 nm.