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Proceedings Paper

Exciton luminescence in beta-ZnP2: 2s and 3s
Author(s): Mitsuru Sugisaki; Osamu Arimoto; Kaizo Nakamura; Koichiro Tanaka; Tohru Suemoto
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Paper Abstract

Secondary emission spectra in the higher region of exciton band of ZnP2 single crystal are measured at 6 K with a tunable Ti:sapphire laser as an exciting light source. The luminescence bands due to the radiative recombination of the 2s, 3s and 4s excitons are clearly observed separately. It is also found that the 1LO Raman line with energy of 32.2 meV shows resonance enhancement near the 2s exciton band. On the contrary, the intensity of the 1LO Raman line becomes anomalously weak when it is just superimposed on the 3s luminescence peak. The shapes of these luminescence bands change considerably when the 1LO Raman line approaches them. The changes in intensity of the 2s and 3s exciton bands with the excitation energy are briefly discussed in regard to the relaxation processes of polariton.

Paper Details

Date Published: 9 February 1995
PDF: 6 pages
Proc. SPIE 2362, International Conference on Excitonic Processes in Condensed Matter, (9 February 1995); doi: 10.1117/12.200981
Show Author Affiliations
Mitsuru Sugisaki, Okayama Univ. (Japan)
Osamu Arimoto, Okayama Univ. (Japan)
Kaizo Nakamura, Okayama Univ. (Japan)
Koichiro Tanaka, Univ. of Tokyo (Japan)
Tohru Suemoto, Univ. of Tokyo (Japan)

Published in SPIE Proceedings Vol. 2362:
International Conference on Excitonic Processes in Condensed Matter
Jai Singh, Editor(s)

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