Temperature profile of GaInAs/AlInAs/InP quantum cascade-laser facets measured by microprobe photoluminescence

Vincenzo Spagnolo; Mariano Troccoli; Gaetano Scamarcio; Claire Gmachl; Federico Capasso; Alessandro Tredicucci; A. Michael Sergent; Albert L. Hutchinson; Deborah L. Sivco; Alfred Y. Cho

doi:10.1063/1.1359146

Temperature profile of GaInAs/AlInAs/InP quantum cascade-laser facets measured by microprobe photoluminescence

Vincenzo Spagnolo, Mariano Troccoli, Gaetano Scamarcio, Claire Gmachl, Federico Capasso, Alessandro Tredicucci, A. Michael Sergent, Albert L. Hutchinson, Deborah L. Sivco, Alfred Y. Cho

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

67 Scopus citations

Abstract

The local temperature of quantum-cascade lasers operating in continuous wave mode is reported. This information is extracted from the thermal shift of the band-to-band photoluminescence peaks in the AlInAs and InP cladding layers of quantum-cascade laser facets using a high-resolution microprobe setup. Interpolation by means of a two-dimensional heat diffusion model allows to obtain the temperature profile and the thermal conductivity in the waveguide core. Comparison between substrate and epilayer-side mounted lasers shows the superior thermal dissipation capability of the latter, and explains their better performance with respect to threshold current and maximum operating temperature.

Original language	English (US)
Pages (from-to)	2095-2097
Number of pages	3
Journal	Applied Physics Letters
Volume	78
Issue number	15
DOIs	https://doi.org/10.1063/1.1359146
State	Published - Apr 9 2001
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.1359146

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title = "Temperature profile of GaInAs/AlInAs/InP quantum cascade-laser facets measured by microprobe photoluminescence",

abstract = "The local temperature of quantum-cascade lasers operating in continuous wave mode is reported. This information is extracted from the thermal shift of the band-to-band photoluminescence peaks in the AlInAs and InP cladding layers of quantum-cascade laser facets using a high-resolution microprobe setup. Interpolation by means of a two-dimensional heat diffusion model allows to obtain the temperature profile and the thermal conductivity in the waveguide core. Comparison between substrate and epilayer-side mounted lasers shows the superior thermal dissipation capability of the latter, and explains their better performance with respect to threshold current and maximum operating temperature.",

author = "Vincenzo Spagnolo and Mariano Troccoli and Gaetano Scamarcio and Claire Gmachl and Federico Capasso and Alessandro Tredicucci and Sergent, \{A. Michael\} and Hutchinson, \{Albert L.\} and Sivco, \{Deborah L.\} and Cho, \{Alfred Y.\}",

year = "2001",

month = apr,

day = "9",

doi = "10.1063/1.1359146",

language = "English (US)",

volume = "78",

pages = "2095--2097",

journal = "Applied Physics Letters",

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publisher = "American Institute of Physics",

number = "15",

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TY - JOUR

T1 - Temperature profile of GaInAs/AlInAs/InP quantum cascade-laser facets measured by microprobe photoluminescence

AU - Spagnolo, Vincenzo

AU - Troccoli, Mariano

AU - Scamarcio, Gaetano

AU - Gmachl, Claire

AU - Capasso, Federico

AU - Tredicucci, Alessandro

AU - Sergent, A. Michael

AU - Hutchinson, Albert L.

AU - Sivco, Deborah L.

AU - Cho, Alfred Y.

PY - 2001/4/9

Y1 - 2001/4/9

N2 - The local temperature of quantum-cascade lasers operating in continuous wave mode is reported. This information is extracted from the thermal shift of the band-to-band photoluminescence peaks in the AlInAs and InP cladding layers of quantum-cascade laser facets using a high-resolution microprobe setup. Interpolation by means of a two-dimensional heat diffusion model allows to obtain the temperature profile and the thermal conductivity in the waveguide core. Comparison between substrate and epilayer-side mounted lasers shows the superior thermal dissipation capability of the latter, and explains their better performance with respect to threshold current and maximum operating temperature.

AB - The local temperature of quantum-cascade lasers operating in continuous wave mode is reported. This information is extracted from the thermal shift of the band-to-band photoluminescence peaks in the AlInAs and InP cladding layers of quantum-cascade laser facets using a high-resolution microprobe setup. Interpolation by means of a two-dimensional heat diffusion model allows to obtain the temperature profile and the thermal conductivity in the waveguide core. Comparison between substrate and epilayer-side mounted lasers shows the superior thermal dissipation capability of the latter, and explains their better performance with respect to threshold current and maximum operating temperature.

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DO - 10.1063/1.1359146

M3 - Article

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VL - 78

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JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 15

ER -

Temperature profile of GaInAs/AlInAs/InP quantum cascade-laser facets measured by microprobe photoluminescence

Abstract

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