Beam position noise and other fundamental noise processes that affect optical storage

David Levenson

doi:10.1117/12.25004

1 March 1991 Beam position noise and other fundamental noise processes that affect optical storage

David Levenson

Proceedings Volume 1376, Laser Noise; (1991) https://doi.org/10.1117/12.25004
Event: Advances in Intelligent Robotics Systems, 1990, Boston, MA, United States

Abstract

The semiconductor diode lasers that are used for optical data storage are known to show large intensity noise. One means of rejecting such noise is to use a differential split detector to read stored data as well as to follow servo tracks etc. Such a strategy is subject to beam position noise a hitherto obscure effect which cannot always be neglected. This paper will discuss the management of diode laser noise which -under ideal conditions - can actually be pushed below the shot noise limit.

Citation Download Citation

David Levenson "Beam position noise and other fundamental noise processes that affect optical storage", Proc. SPIE 1376, Laser Noise, (1 March 1991); https://doi.org/10.1117/12.25004

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