Laser with mode control and pump current confinement

Details Laser with mode control and pump current confinement Laser with mode control and pump current confinement

H - Electricity

01

S

345/32

H01S 3/18 (1985.01)

Patent

CA 1203611

LASER WITH MODE CONTROL AND PUMP CURRENT CONFINEMENT ABSTRACT OF THE INVENTION A diode laser in which improved transverse mode control is achieved by bounding at least one side of the laser active region (in which the lowest order transverse mode exists) by a thicker, lower index of refraction region of higher bandgap. The thicker, higher bandgap region, as well as a pump current confinement path, can be provided by a relatively deep substrate surface channel which extends completely through a portion of a rectifying junction formed near the substrate surface.

303315

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