Two-photon absorption and multiphoton-induced photoluminescence of bulk GaN excited below the middle of the band gap

Toda, Y.; Matsubara, T.; Morita, R.; Yamashita, M.; Hoshino, K.; Someya, T.; Arakawa, Y.

Two-photon absorption and multiphoton-induced photoluminescence of bulk GaN excited below the middle of the band gap

Toda, Y.; Matsubara, T.; Morita, R. et al.

Applied Physics Letters, 2003, 82(26), 4714

Permalink : https://hdl.handle.net/2115/60592

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アクセス権	open access
URI	https://hdl.handle.net/2115/60592
タイトル	Two-photon absorption and multiphoton-induced photoluminescence of bulk GaN excited below the middle of the band gap
著者	Toda, Y. ; Matsubara, T. ; Morita, R. ; Yamashita, M. ; Hoshino, K. ; Someya, T. ; Arakawa, Y.
e-Rad_Researcher 00313106 著者名 Toda, Y.
著者名 Matsubara, T.
e-Rad_Researcher 30222350 著者名 Morita, R.
著者名 Yamashita, M.
著者名 Hoshino, K.
著者名 Someya, T.
著者名 Arakawa, Y.
言語	英語
発行日	2003
収録物名	Applied Physics Letters
巻(号)	82(26)
ページ	4714
抄録	Optical nonlinearity in the yellow luminescence (YL) band of GaN was investigated using thick bulk samples. Transient pump–probe measurements revealed strong transmission changes due to two-photon absorption(TPA) even at the middle of the YL band. The TPA coefficient evaluated reaches ∼5 cm/GW∼5 cm/GW at about 1.3 eV, which was as large as the mid-gap resonance. The TPA spectrum clearly showed that the observed large nonlinearity originated from the YL band. On the basis of efficient TPA in the YL band, relaxation processes in the multiphoton-induced photoluminescence excitation spectrum were also investigated.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2003 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 82, 4714 (2003) and may be found at http://dx.doi.org/10.1063/1.1587260.
PISSN	0003-6951
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1063/1.1587260