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 402409  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  λrms. The temperature range within which the laser can compensate for thermal expansion of the medium is estimated based on the tunable range, which is ±13.5  °C for glass substrates and ±17.5  °C for amorphous polyolefin substrates.

© 2007 Optical Society of America

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