Controller for semiconductor laser light source

Details Controller for semiconductor laser light source Controller for semiconductor laser light source

1989-05-25

1990-12-11

Scott, Jr., Leon

Coherent light generators

Particular beam control device

Optical output stabilization

372 38, 372 31, 372 97, 372 29, H01S 313

Patent

active

049775642

ABSTRACT:
In a controller for a semiconductor laser light source, a portion of light emitted from the source is fed back to regulate the spectral line width of the source and to regulate the oscillation frequency of the source in terms of the phase of the portion or the driving current for the source, the very small portion of the light is allowed to pass through an external resonator so as to be subjected to optical frequency discrimination by an optical frequency discriminator, the portion does not need to be divided from a communication signal light. Therefore, the communication signal light can be undergo a loss.

REFERENCES:
patent: 4479221 (1984-10-01), Kitamura
patent: 4677630 (1987-06-01), Fujita et al.
patent: 4748632 (1988-05-01), Preston

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