Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces

Introduced: January 1985

Last revised: January 2012

Full Title

Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation, reproducing using an optical beam at lower power; Record carriers therefor > Heads, e.g. forming of the optical beam spot or modulation of the optical beam > Optical beam sources therefor, e.g. laser control circuitry specially adapted for optical storage devices; Modulators, e.g. means for controlling the size or intensity of optical spots or optical traces

Classification Context

Section:: PHYSICS
Class:: INFORMATION STORAGE
Subclass:: INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER

3 direct subcodes

Child Classifications

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G11B 7/126 Circuits, methods or arrangements for laser control or stabilisation
G11B 7/127 Lasers; Multiple laser arrays
G11B 7/128 Modulators