Method of mode detection and control in semiconductor lasers

Details Method of mode detection and control in semiconductor lasers Method of mode detection and control in semiconductor lasers

1996-07-01

1997-12-30

Davie, James W.

Coherent light generators

Particular beam control device

Optical output stabilization

372 19, 372 50, 372 96, H01S 310

Patent

active

057038929

ABSTRACT:
A method of controlling the spatial mode of the output of a semiconductor laser including the steps of monitoring above threshold spontaneous emissions of a semiconductor laser. Identifying a point at which the rate-of-change, or the slope, of spontaneous emissions versus drive current abruptly changes. Employing feedback to maintain spatial mode control.

REFERENCES:
patent: 5381230 (1995-01-01), Blake et al.
patent: 5438578 (1995-08-01), Lee et al.
patent: 5577064 (1996-11-01), Swirhun et al.

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