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Proceedings Paper

Holographic recording in a doubly doped lithium niobate crystal with two wavelengths: a blue laser diode and a green laser
Author(s): Yuichi Komori; Yukihiro Ishii
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Paper Abstract

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.

Paper Details

Date Published: 31 August 2010
PDF: 7 pages
Proc. SPIE 7781, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV, 778119 (31 August 2010); doi: 10.1117/12.864156
Show Author Affiliations
Yuichi Komori, Tokyo Univ. of Science (Japan)
Yukihiro Ishii, Tokyo Univ. of Science (Japan)


Published in SPIE Proceedings Vol. 7781:
Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications IV
Shizhuo Yin; Ruyan Guo, Editor(s)

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