Phased array semiconductor lasers with uniform and stable supermode

Patent · Tue Jan 12 04:00:00 EST 1988

OSTI ID:5276190

Streifer, W

This patent describes a phased array semiconductor laser favoring emission in the 1/sup st/ or N/sup th/ supermode over other potential supermodes of the laser comprising spatially disposed laser elements formed relative to an active region to provide optical cavities for light wave generation and propagation under lasing conditions and wherein the optical field of the laser elements are coupled into the optical cavities of adjacent laser elements to provide a phase locked condition across the array. The improvement comprising the center to center spacing of the laser elements is substantially uniform except for the outer laser element at each end of the array which are spaced closer to its adjacent laser element than the uniform spacing such that optical field coupling is enhanced to produce a single supermode with a nearly uniform and fairly rectangular shaped intensity envelope.

• Assignee: Xerox Corp., Stamford, CT
• Patent Number(s): US 4719630
• OSTI ID: 5276190
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
CONTROL
LASER CAVITIES
LASERS
MODE CONTROL
MODE LOCKING
OPERATION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS