Multiple wavelength, surface emitting laser with broad bandwidth

Details Multiple wavelength, surface emitting laser with broad bandwidth Multiple wavelength, surface emitting laser with broad bandwidth

1996-07-01

1999-10-05

Bovernick, Rodney

Coherent light generators

Particular beam control device

Producing plural wavelength output

372 50, 372 96, H01S 310, H01S 319, H01S 308

Patent

active

059635681

ABSTRACT:
A multiple wavelength surface emitting laser has a first and second broad bandwidth distributed Bragg reflector (DBR) which reflect light at multiple wavelengths. The surface emitting laser structure comprises at least two cavities with each cavity containing one or more active layers for respectively emitting light at different wavelengths. In a preferred embodiment for a dual wavelength surface emitting laser, a first cavity contains a first active layer for emitting light of a first wavelength and a second cavity contains the first and second active layers and emits only light of the second longer wavelength. The second layer has been eliminated in the first cavity by etching before completing the epitaxial growth.

REFERENCES:
patent: 5206872 (1993-04-01), Jewell et al.
patent: 5319655 (1994-06-01), Thornton
patent: 5386428 (1995-01-01), Thornton et al.
patent: 5425043 (1995-06-01), Holonyak, Jr. et al.
patent: 5465263 (1995-11-01), Bour et al.

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