Room temperature continuous wave operation of quantum cascade lasers with 12.5% wall plug efficiency

Journal Article · Mon Jul 14 00:00:00 EDT 2008 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2957673· OSTI ID:21123957

Bai, Y; Slivken, S; Darvish, S R; Razeghi, M ^[1]

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1. Center for Quantum Devices, Department of Electrical Engineering and Computer Science, Northwestern University, Evanston, Illinois 60208 (United States)

An InP based quantum cascade laser heterostructure emitting at 4.6 {mu}m was grown with gas-source molecular beam epitaxy. The wafer was processed into a conventional double-channel ridge waveguide geometry with ridge widths of 19.7 and 10.6 {mu}m without semi-insulating InP regrowth. An uncoated, narrow ridge device with a 4.8 mm cavity length was epilayer down bonded to a diamond submount and exhibits 2.5 W maximum output power with a wall plug efficiency of 12.5% at room temperature in continuous wave operation.

• OSTI ID: 21123957
• Journal Information: Applied Physics Letters, Vol. 93, Issue 2; Other Information: DOI: 10.1063/1.2957673; (c) 2008 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CAVITY RESONATORS
CRYSTAL GROWTH
DIAMONDS
GEOMETRY
INDIUM PHOSPHIDES
LASER CAVITIES
LASERS
MOLECULAR BEAM EPITAXY
SEMICONDUCTOR MATERIALS
TEMPERATURE RANGE 0273-0400 K
WAVEGUIDES