Diode laser source with concurrently driven light emitting segme

Details Diode laser source with concurrently driven light emitting segme Diode laser source with concurrently driven light emitting segme

1994-06-30

1997-01-14

Healy, Brian

Coherent light generators

Particular active media

Semiconductor

372 43, 372102, 359622, 359719, 346141, H01S 318, H01S 310, G02B 2710

Patent

active

055947522

ABSTRACT:
A diode laser source including a laser diode whose emitting element or elements is divided into a plurality of concurrently driven laser segments. Beam filling and focusing optics are disposed in front of the segments so that light from the segments in each element converges to a single overlapping spot. The optics include a beam filling lens array collimating the light from the segments and either a single focusing lens or a second lens array focusing the collimated light to corresponding spots. In the case of a multi-element laser diode array, each multi-segment element of the array is individually addressable so as to be driven independently from the other array elements. The segmentation of laser elements improves laser life by reducing thermal gradients and isolating any local failures to a single segment, while the focusing of the segments to overlapping light spots increases the tolerance of the source to local failures. Two or more segments in a given element must fail before the source is considered to fail.

REFERENCES:
patent: 4428647 (1984-01-01), Sprague et al.
patent: 4520472 (1985-05-01), Reno
patent: 4553148 (1985-11-01), Behrens et al.
patent: 4674095 (1987-06-01), Heinen et al.
patent: 4743091 (1988-05-01), Gelbart
patent: 4804975 (1989-02-01), Yip
patent: 4813762 (1989-03-01), Leger et al.
patent: 4939630 (1990-07-01), Kikuchi et al.
patent: 4972427 (1990-11-01), Streifer et al.
patent: 4978974 (1990-12-01), Etzel
patent: 5081637 (1992-01-01), Fan et al.
patent: 5109460 (1992-04-01), Baek et al.
patent: 5139609 (1992-08-01), Fields et al.
patent: 5163058 (1992-11-01), Farries et al.
patent: 5168401 (1992-12-01), Endriz
patent: 5185758 (1993-02-01), Fan et al.
patent: 5212707 (1993-05-01), Herdel et al.
patent: 5216687 (1993-06-01), Fujino et al.
patent: 5299219 (1994-03-01), Hayakawa
patent: 5317170 (1994-05-01), Paoli

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