Material selection for double heterojunction lasers - A higher bandgap does not necessarily mean lower refractive index

Journal Article · Fri May 01 04:00:00 EDT 1987 · IEEE J. Quant. Electron.; (United States)

DOI:https://doi.org/10.1109/JQE.1987.1073377· OSTI ID:6557516

Toda, M

Double heterojunction (DH) lasers are composed of a lower energy bandgap active layer sandwiched between higher bandgap cladding layers, and the refractive index of the active layer has to be higher than that of the cladding layer. A number of published papers are based on the belief that higher bandgap materials necessarily have lower refractive indexes, so that the correct-bandgap DH structure automatically satisfies the requirement for the refractive index. This paper points out that this belief appears to be incorrect, and presents a series of examples in support of this statement.

• Research Organization: RCA Labs., Princeton, NJ 08543
• OSTI ID: 6557516
• Journal Information: IEEE J. Quant. Electron.; (United States), Journal Name: IEEE J. Quant. Electron.; (United States) Vol. QE-23:5; ISSN IEJQA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603 -- Materials-- Properties
42 ENGINEERING
420300* -- Engineering-- Lasers-- (-1989)
ENERGY GAP
FABRICATION
GRADED BAND GAPS
HETEROJUNCTIONS
JUNCTIONS
LASER MATERIALS
LASERS
LAYERS
MATERIALS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
REFRACTIVITY
SEMICONDUCTOR DEVICES
SEMICONDUCTOR JUNCTIONS
SEMICONDUCTOR LASERS
SEMICONDUCTOR MATERIALS