Grating—outcoupled surface-emitting lasers

Details Grating—outcoupled surface-emitting lasers Grating—outcoupled surface-emitting lasers

2005-11-08

2008-11-11

Nguyen, Dung T (Department: 2828)

Coherent light generators

Particular active media

Semiconductor

C372S064000, C372S103000, C372S108000

Reexamination Certificate

active

07450624

ABSTRACT:
Laser diodes are formed with an outcoupling grating between two separate distributed Bragg reflectors. The devices have gain regions located between the reflector gratings for pumping the active region. The outcoupling grating couples light out of the waveguide normal to the surface if the grating spacings are equal to an integer number of wavelengths of the light within the cavity. If the gratings are not such an integer number, the light is coupled out of the cavity off the normal.

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