Monolithically integrated high power laser optical device

Details Monolithically integrated high power laser optical device Monolithically integrated high power laser optical device

2006-04-25

2006-04-25

Porta, David (Department: 2878)

Coherent light generators

Particular active media

Semiconductor

C372S020000, C372S029021

Reexamination Certificate

active

07035305

ABSTRACT:
An optical device, including a monolithically integrated diode laser and semiconductor optical amplifier, that has reduced linewidth and improved side mode suppression for a given output power target. In a preferred embodiment, the diode laser is detuned from a gain peak wavelength to an emission wavelength. The semiconductor optical amplifier has an active region that is bandgap shifted to move its gain peak towards the emission wavelength of the laser diode, thus reducing its linewidth enhancement factor. The diode laser is preferably either a gain-coupled or index-coupled distributed feedback laser. The bandgap shift can be effected by known bandgap shifting methods, such as ion implantation, dielectric cap disordering, and laser induced disordering.

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