Surface emitting lasers with combined output

Patent · Tue Jan 16 04:00:00 EST 1990

OSTI ID:6961363

Carlin, D B

This patent describes a surface emitting semiconductor laser device for emitting an output light signal perpendicular to a major surface thereof. It comprises: a substrate having first and second opposing major surfaces; first contact means over the first major surface of the substrate; first and second longitudinally spaced apart and laterally aligned laser regions defining a central region therebetween and the laser regions being disposed on the second major surface of the substrate; an optical medium extending over the central region and the first and second laser regions through which light generated by the first and second laser regions propagates; a capping laver and second contact means overlying the optical medium; and a single optical grating surface etched into the second contact means and the capping layer to extend over the central region in optical communication with the optical medium to define the major surface of the laser device wherein the first and second laser regions are disposed on opposing sides longitudinally of the grating surface. The grating surface having grating periods for phase locking and combining the light propagations in the optical medium and generated by the first and second laser regions and for allowing the output light signal to be emitted therethrough perpendicular to the major surface of the laser device.

• Assignee: General Electric Co., Schenectady, NY
• Patent Number(s): A; US 4894833
• Application Number: PPN: US 7-230105A
• OSTI ID: 6961363
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
426002* -- Engineering-- Lasers & Masers-- (1990-)
ELECTROMAGNETIC RADIATION
LASERS
OPTICS
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SOLID STATE LASERS
SUBSTRATES
SURFACES
VISIBLE RADIATION