Watt level performance of quantum cascade lasers in room temperature continuous wave operation at λ∼3.76 μm

N. Bandyopadhyay; Y. Bai; B. Gokden; A. Myzaferi; S. Tsao; Steven Boyd Slivken; Manijeh Razeghi

doi:10.1063/1.3496489

Watt level performance of quantum cascade lasers in room temperature continuous wave operation at λ∼3.76 μm

N. Bandyopadhyay^*, Y. Bai, B. Gokden, A. Myzaferi, S. Tsao, Steven Boyd Slivken, Manijeh Razeghi

^*Corresponding author for this work

Research output: Contribution to journal › Article

61 Scopus citations

Abstract

An InP-based quantum cascade laser heterostructure emitting at 3.76 μm is grown with gas-source molecular beam epitaxy. The laser core is composed of strain balanced In0.76 Ga0.24 As/ In0.26 Al0.74 As. Pulsed testing at room temperature exhibits a low threshold current density (1.5 kA/ cm²) and high wall plug efficiency (10%). Room temperature continuous wave operation gives 6% wall plug efficiency with a maximum output power of 1.1 W. Continuous wave operation persists up to 95 °C.

Original language	English (US)
Article number	131117
Journal	Applied Physics Letters
Volume	97
Issue number	13
DOIs	https://doi.org/10.1063/1.3496489
State	Published - Sep 27 2010

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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Bandyopadhyay, N., Bai, Y., Gokden, B., Myzaferi, A., Tsao, S., Slivken, S. B., & Razeghi, M. (2010). Watt level performance of quantum cascade lasers in room temperature continuous wave operation at λ∼3.76 μm. Applied Physics Letters, 97(13), [131117]. https://doi.org/10.1063/1.3496489

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AU - Tsao, S.

AU - Slivken, Steven Boyd

AU - Razeghi, Manijeh

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