Phase-locked laser array with phase-shifting surface coating

Patent · Tue Feb 14 04:00:00 EST 1989

OSTI ID:6297495

Botez, D; Bogner, B F

This patent describes a phase-locked semiconductor laser array comprising a semiconductor body having an emitting surface, the body including a cavity region overlying a major surface of a substrate and means for defining a plurality of substantially parallel lasing regions, each of the lasing region spaced from adjacent regions by a distance that cause the radiation modes in adjacent lasing regions to be phase-locked to one another. The improvement of this array includes on the emitting surface means for shifting the relative phases of the laser beams emitted by the array such that the phases of all the emitted laser beams are substantially the same in a plane beyond the array.

• Assignee: General Electric Co., Schenectady, NY
• Patent Number(s): US 4805176
• OSTI ID: 6297495
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
COATINGS
DESIGN
ELECTROMAGNETIC RADIATION
EMISSION
LASER RADIATION
LASERS
MODE LOCKING
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
RADIATIONS
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SURFACES