Control of spectral content of a laser diode light source

Details Control of spectral content of a laser diode light source Control of spectral content of a laser diode light source

2007-05-15

2007-05-15

Harvey, Minsun Oh (Department: 2828)

Coherent light generators

Particular component circuitry

For driving or controlling laser

C356S405000, C356S411000, C315S307000

Reexamination Certificate

active

10854859

ABSTRACT:
In one exemplary embodiment, apparatus is provided with a plurality of laser diodes, sensing means and control means. During normal operation, the laser diodes produce a mixed light. The sensing means measures light that is output by the laser diodes; and the control means 1) compares the measured light to a spectral reference, and 2) sets drive signals of the laser diodes in response to the comparison. In a related and exemplary method, 1) a mixed light is produced using a plurality of laser diodes of different colors, 2) a measurement of light produced by the laser diodes is compared to a spectral reference, and 3) drive signals of the laser diodes are automatically set in response to the comparison.

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patent: 6394626 (2002-05-01), McColloch
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patent: 2003/0230991 (2003-12-01), Muthu et al.
patent: 2005/0134197 (2005-06-01), Lee et al.

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