High output power laser

Details High output power laser High output power laser

H - Electricity

01

L

345/32

H01L 21/20 (2006.01)

Patent

CA 1137605

ABSTRACT OF THE DISCLOSURE A heterostructure injection laser is provided with very thin cladding or confinement layers adjacent each side of the active layer. The cladding layers are characterized with the wider bandgap while the active layer has the smallest bandgap and the highest index of refraction. The in- jected carriers are confined by the thin wide bandgap cladding layers on either side of the active layer while the optical wave is confined by thick intermediate index layers of the laser. This structure provides for overall low thermal re- sistance thereby allowing for higher output power with low beam divergence.

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