High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm

J. S. Yu; S. Slivken; S. R. Darvish; A. Evans; B. Gokden; M. Razeghi

doi:10.1063/1.2000343

High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm

J. S. Yu, S. Slivken, S. R. Darvish, A. Evans, B. Gokden, M. Razeghi

Research output: Contribution to journal › Article › peer-review

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Abstract

A high-power continuous-wave (CW) operation of distributed-feedback quantum-cascade lasers using a buried grating with epitaxial regrowth up to temperatures of above 60 °C is demonstrated. For a high-reflectivity-coated 13 μm -wide and 3 mm -long cavity, CW output powers of 135 mW at 25 °C and still 37 mW at 60 °C are obtained. The device exhibits a CW threshold current density of 1.1 kA cm2, a maximum CW wall-plug efficiency of 1.48% at 25 °C, and a characteristic temperature of 177 K in pulsed mode. Single-mode emission near 4.8 μm with a side-mode suppression ratio of >30 dB and a tuning range of ∼8.1 cm-1 (i.e., tunability of 0.18 cm-1 K) in the temperature range from 15 to 60 °C is observed.

Original language	English (US)
Article number	041104
Journal	Applied Physics Letters
Volume	87
Issue number	4
DOIs	https://doi.org/10.1063/1.2000343
State	Published - Jul 25 2005

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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title = "High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm",

abstract = "A high-power continuous-wave (CW) operation of distributed-feedback quantum-cascade lasers using a buried grating with epitaxial regrowth up to temperatures of above 60 °C is demonstrated. For a high-reflectivity-coated 13 μm -wide and 3 mm -long cavity, CW output powers of 135 mW at 25 °C and still 37 mW at 60 °C are obtained. The device exhibits a CW threshold current density of 1.1 kA cm2, a maximum CW wall-plug efficiency of 1.48% at 25 °C, and a characteristic temperature of 177 K in pulsed mode. Single-mode emission near 4.8 μm with a side-mode suppression ratio of >30 dB and a tuning range of ∼8.1 cm-1 (i.e., tunability of 0.18 cm-1 K) in the temperature range from 15 to 60 °C is observed.",

author = "Yu, {J. S.} and S. Slivken and Darvish, {S. R.} and A. Evans and B. Gokden and M. Razeghi",

note = "Funding Information: This work is partially funded by the Defense Advanced Research Projects Agency (DARPA), the Air Force Office of Scientific Research (AFOSR), the Office of Naval Research (ONR), and the Army Research Office (ARO). The authors would like to acknowledge the interest, support and encouragement of Dr. J. Carrano from DARPA, Dr. T. Steiner from AFOSR, Dr. K. Hathaway from ONR, Dr. Michael Gerhold from ARO, and Dr. J. Meyer from Naval Research Laboratory. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

year = "2005",

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doi = "10.1063/1.2000343",

language = "English (US)",

volume = "87",

journal = "Applied Physics Letters",

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T1 - High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm

AU - Yu, J. S.

AU - Slivken, S.

AU - Darvish, S. R.

AU - Evans, A.

AU - Gokden, B.

AU - Razeghi, M.

N1 - Funding Information: This work is partially funded by the Defense Advanced Research Projects Agency (DARPA), the Air Force Office of Scientific Research (AFOSR), the Office of Naval Research (ONR), and the Army Research Office (ARO). The authors would like to acknowledge the interest, support and encouragement of Dr. J. Carrano from DARPA, Dr. T. Steiner from AFOSR, Dr. K. Hathaway from ONR, Dr. Michael Gerhold from ARO, and Dr. J. Meyer from Naval Research Laboratory. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2005/7/25

Y1 - 2005/7/25

N2 - A high-power continuous-wave (CW) operation of distributed-feedback quantum-cascade lasers using a buried grating with epitaxial regrowth up to temperatures of above 60 °C is demonstrated. For a high-reflectivity-coated 13 μm -wide and 3 mm -long cavity, CW output powers of 135 mW at 25 °C and still 37 mW at 60 °C are obtained. The device exhibits a CW threshold current density of 1.1 kA cm2, a maximum CW wall-plug efficiency of 1.48% at 25 °C, and a characteristic temperature of 177 K in pulsed mode. Single-mode emission near 4.8 μm with a side-mode suppression ratio of >30 dB and a tuning range of ∼8.1 cm-1 (i.e., tunability of 0.18 cm-1 K) in the temperature range from 15 to 60 °C is observed.

AB - A high-power continuous-wave (CW) operation of distributed-feedback quantum-cascade lasers using a buried grating with epitaxial regrowth up to temperatures of above 60 °C is demonstrated. For a high-reflectivity-coated 13 μm -wide and 3 mm -long cavity, CW output powers of 135 mW at 25 °C and still 37 mW at 60 °C are obtained. The device exhibits a CW threshold current density of 1.1 kA cm2, a maximum CW wall-plug efficiency of 1.48% at 25 °C, and a characteristic temperature of 177 K in pulsed mode. Single-mode emission near 4.8 μm with a side-mode suppression ratio of >30 dB and a tuning range of ∼8.1 cm-1 (i.e., tunability of 0.18 cm-1 K) in the temperature range from 15 to 60 °C is observed.

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High-power, room-temperature, and continuous-wave operation of distributed-feedback quantum-cascade lasers at λ∼4.8 μm

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