High-Power Continuous-Wave Operation of Quantum-Cascade Lasers up to 60°C

J. S. Yu; A. Evans; J. David; L. Doris; S. Slivken; M. Razeghi

doi:10.1109/LPT.2004.823686

High-Power Continuous-Wave Operation of Quantum-Cascade Lasers up to 60°C

J. S. Yu, A. Evans, J. David, L. Doris, S. Slivken, M. Razeghi

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

58 Citations (Scopus)

Abstract

High-temperature high-power continuous-wave (CW) operation of high-reflectivity-coated 12-μm-wide quantum-cascade lasers emitting at λ = 6 μm with a thick electroplated Au top contact layer is reported for different cavity lengths. For a 3-mm-long laser, the CW optical output powers of 381 m W at 293 K and 22 mW at maximum operating temperature of 333 K (60°C) are achieved with threshold current densities of 1.93 and 3.09 kA/cm², respectively. At 298 K, the same cavity gives a maximum wall plug efficiency of 3.17% at 1.07 A. An even higher CW optical output power of 424 mW at 293 K is obtained for a 4-mm-long laser and the device also operates up to 332 K with an output power of 14 mW. Thermal resistance is also analyzed at threshold as a function of cavity length.

Original language	English
Pages (from-to)	747-749
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	16
Issue number	3
DOIs	https://doi.org/10.1109/LPT.2004.823686
Publication status	Published - Mar 2004

Bibliographical note

Funding Information:
Manuscript received October 3, 2003; revised November 11, 2003. This work was supported under Navy Contract N00014-03-1-0003. The authors are with the Electrical and Computer Engineering Department, Center for Quantum Devices, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LPT.2004.823686

Keywords

Cavity length
Continuous wave (CW)
High-temperature operation
Mid-infrared
Quantum wells
Quantum-cascade lasers (QCLs)

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10.1109/LPT.2004.823686

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title = "High-Power Continuous-Wave Operation of Quantum-Cascade Lasers up to 60°C",

abstract = "High-temperature high-power continuous-wave (CW) operation of high-reflectivity-coated 12-μm-wide quantum-cascade lasers emitting at λ = 6 μm with a thick electroplated Au top contact layer is reported for different cavity lengths. For a 3-mm-long laser, the CW optical output powers of 381 m W at 293 K and 22 mW at maximum operating temperature of 333 K (60°C) are achieved with threshold current densities of 1.93 and 3.09 kA/cm2, respectively. At 298 K, the same cavity gives a maximum wall plug efficiency of 3.17% at 1.07 A. An even higher CW optical output power of 424 mW at 293 K is obtained for a 4-mm-long laser and the device also operates up to 332 K with an output power of 14 mW. Thermal resistance is also analyzed at threshold as a function of cavity length.",

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note = "Funding Information: Manuscript received October 3, 2003; revised November 11, 2003. This work was supported under Navy Contract N00014-03-1-0003. The authors are with the Electrical and Computer Engineering Department, Center for Quantum Devices, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LPT.2004.823686",

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AU - David, J.

AU - Doris, L.

AU - Slivken, S.

AU - Razeghi, M.

N1 - Funding Information: Manuscript received October 3, 2003; revised November 11, 2003. This work was supported under Navy Contract N00014-03-1-0003. The authors are with the Electrical and Computer Engineering Department, Center for Quantum Devices, Northwestern University, Evanston, IL 60208 USA (e-mail: [email protected]). Digital Object Identifier 10.1109/LPT.2004.823686

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N2 - High-temperature high-power continuous-wave (CW) operation of high-reflectivity-coated 12-μm-wide quantum-cascade lasers emitting at λ = 6 μm with a thick electroplated Au top contact layer is reported for different cavity lengths. For a 3-mm-long laser, the CW optical output powers of 381 m W at 293 K and 22 mW at maximum operating temperature of 333 K (60°C) are achieved with threshold current densities of 1.93 and 3.09 kA/cm2, respectively. At 298 K, the same cavity gives a maximum wall plug efficiency of 3.17% at 1.07 A. An even higher CW optical output power of 424 mW at 293 K is obtained for a 4-mm-long laser and the device also operates up to 332 K with an output power of 14 mW. Thermal resistance is also analyzed at threshold as a function of cavity length.

AB - High-temperature high-power continuous-wave (CW) operation of high-reflectivity-coated 12-μm-wide quantum-cascade lasers emitting at λ = 6 μm with a thick electroplated Au top contact layer is reported for different cavity lengths. For a 3-mm-long laser, the CW optical output powers of 381 m W at 293 K and 22 mW at maximum operating temperature of 333 K (60°C) are achieved with threshold current densities of 1.93 and 3.09 kA/cm2, respectively. At 298 K, the same cavity gives a maximum wall plug efficiency of 3.17% at 1.07 A. An even higher CW optical output power of 424 mW at 293 K is obtained for a 4-mm-long laser and the device also operates up to 332 K with an output power of 14 mW. Thermal resistance is also analyzed at threshold as a function of cavity length.

KW - Cavity length

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KW - High-temperature operation

KW - Mid-infrared

KW - Quantum wells

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High-Power Continuous-Wave Operation of Quantum-Cascade Lasers up to 60°C

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Keywords

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