Lead-strontium-chalcogenide diode laser

Patent · Tue Jan 26 04:00:00 EST 1988

OSTI ID:5440923

Partin, D L

A large optical cavity quantum well double heterojunction semiconductor infrared diode laser is described having an active region layer sandwiched between two contiguous layers of monocrystalline semiconductive material. The laser exhibits current carrier and optical confinement for its active region layer but also exhibits increased operating temperature due to close lattice matching of face centered cubic monocrystalline layers forming the double heterojunctions. The laser comprises a monocrystalline buffer layer of a given conductivity type lead salt semiconductor containing strontium, selenium that has an energy band gap greater than, an index of refraction lesser than, and a lattice constant substantially equal to predetermined values of the active region layer, a monocrystalline active region layer on the buffer layer of a lead salt semiconductor containing a pn junction that has the predetermined energy and gap, index of refraction and lattice constant, and a confinement layer on the active region layer an opposite conductivity type lead salt semiconductor containing lesser amounts and smaller proportions of strontium and selenium that has an energy band gap greater than, an index of refraction smaller than, and a lattice constant substantially equal to the predetermined values.

• Assignee: General Motors Corp., Detroit, MI
• Patent Number(s): US 4722087
• OSTI ID: 5440923
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ALKALINE EARTH METALS
CHALCOGENIDES
CRYSTALS
DESIGN
ELECTROMAGNETIC RADIATION
ELEMENTS
ENERGY GAP
HETEROJUNCTIONS
INFRARED RADIATION
JUNCTIONS
LASER CAVITIES
LASERS
LEAD
METALS
MONOCRYSTALS
OPTICAL PROPERTIES
OPTICAL SYSTEMS
P-N JUNCTIONS
PHYSICAL PROPERTIES
RADIATIONS
REFRACTIVITY
SELENIUM
SEMICONDUCTOR DEVICES
SEMICONDUCTOR DIODES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
SEMIMETALS
STRONTIUM