標題: Experimental observation of the slowdown of optical beams by a volume-index grating in a photorefractive LiNbO3 crystal
作者: Lin, SH
Hsu, KY
Yeh, P
電子物理學系
光電工程學系
Department of Electrophysics
Department of Photonics
公開日期: 1-Nov-2000
摘要: We investigate the group velocity of light in a one-dimensional volume-index grating inside a photorefractive LiNbO3 crystal. The slowdown of the group electromagnetic propagation is observed experimentally by tuning of the wave number of the optical beam close to the outside edge of the forbidden bandgap. We obtain a large group index of up to 7.5 in a 3.5-cm crystal sample. The group index is compared with the result of a theoretical derivation. The results are presented and discussed. (C) 2000 Optical Society of America OCIS codes: 050.7330, 260.2030, 190.5530, 160.3730.
URI: http://hdl.handle.net/11536/30156
ISSN: 0146-9592
期刊: OPTICS LETTERS
Volume: 25
Issue: 21
起始頁: 1582
結束頁: 1584
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