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Tunable blue laser compensates for thermal expansion of the medium in holographic data storage

Authors :
Tanaka, Tomiji
Sako, Kageyasu
Kasegawa, Ryo
Toishi, Mitsuru
Watanabe, Kenjiro
Source :
Applied Optics. Sept 1, 2007, Vol. 46 Issue 25, p6263, 10 p.
Publication Year :
2007

Abstract

A tunable laser optical source equipped with wavelength and mode-hop monitors was developed to compensate for thermal expansion of the medium in holographic data storage. The laser's tunable range is 402-409 nm, and supplying 90 mA of laser diode current provides an output power greater than 40 mW. The aberration of output light is less than 0.05 [lambda]rms. The temperature range within which the laser can compensate for thermal expansion of the medium is estimated based on the tunable range, which is [+ or -]13.5 [degrees]C for glass substrates and [+ or -]17.5 [degrees]C for amorphous polyolefin substrates. OCIS codes: 090.7330, 140.3600, 210.2860.

Details

Language :
English
ISSN :
1559128X
Volume :
46
Issue :
25
Database :
Gale General OneFile
Journal :
Applied Optics
Publication Type :
Academic Journal
Accession number :
edsgcl.169823171