Holographic recording in a doubly doped lithium niobate crystal with two wavelengths: a blue laser diode and a green laser

Autor:	Yuichi Komori, Yukihiro Ishii
Rok vydání:	2010
Předmět:	Blue laser Materials science business.industry Lithium niobate Holography Bragg's law Laser law.invention Semiconductor laser theory Crystal chemistry.chemical_compound Optics chemistry law Optoelectronics business Diode
Zdroj:	SPIE Proceedings.
ISSN:	0277-786X
DOI:	10.1117/12.864156
Popis:	A doubly-doped LiNbO3 (LN) crystal has been well used as a nonvolatile two-wavelength recording material. By using two levels of the crystal, two-kind holograms can be recorded on one crystal; a hologram is recorded with a 405-nm blue laser diode (LD) for a deep Mn level, and another hologram is with a 532-nm green laser for a shallow Fe level. The recording capacity doubles. A 780-nm LD is non-volatile reconstructing source since the LD line is insensitive to both levels. Multiplexed reconstructed images are demonstrated by using a sharp angular selectivity of a volume LN crystal keeping Bragg condition with spherical reconstructions.© (2010) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Databáze:	OpenAIRE
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