Widely tunable quantum cascade lasers with coupled cavities for gas detection

Peter Fuchs; Jochen Seufert; Johannes Koeth; Julia Semmel; Sven Höfling; Lukas Worschech; Alfred Forchel

doi:10.1063/1.3514247

Widely tunable quantum cascade lasers with coupled cavities for gas detection

Peter Fuchs^*, Jochen Seufert, Johannes Koeth, Julia Semmel, Sven Höfling, Lukas Worschech, Alfred Forchel

^*Corresponding author for this work

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

33 Citations (Scopus)

Abstract

The authors report the fabrication of widely tunable monolithic quantum cascade lasers (QCLs) with coupled Fabry-Perot (FP) cavities on indium phosphide. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8.394 and 8.785 mu m. An absorption experiment with ammonia shows principle feasibility of gas detection with multisegment QCL devices. Good agreement of the experimentally observed tuning behavior with the one expected from calculated FP mode-combs indicates that the change in the refractive index is mainly due to thermal heating as a result of current injection. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514247]

Original language	English
Article number	181111
Number of pages	3
Journal	Applied Physics Letters
Volume	97
Issue number	18
DOIs	https://doi.org/10.1063/1.3514247
Publication status	Published - 1 Nov 2010

Keywords

LINEWIDTH ENHANCEMENT FACTOR
HIGH-AVERAGE-POWER
ROOM-TEMPERATURE
MU-M
DISTRIBUTED-FEEDBACK
SINGLE-MODE

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title = "Widely tunable quantum cascade lasers with coupled cavities for gas detection",

abstract = "The authors report the fabrication of widely tunable monolithic quantum cascade lasers (QCLs) with coupled Fabry-Perot (FP) cavities on indium phosphide. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8.394 and 8.785 mu m. An absorption experiment with ammonia shows principle feasibility of gas detection with multisegment QCL devices. Good agreement of the experimentally observed tuning behavior with the one expected from calculated FP mode-combs indicates that the change in the refractive index is mainly due to thermal heating as a result of current injection. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514247]",

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doi = "10.1063/1.3514247",

language = "English",

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TY - JOUR

T1 - Widely tunable quantum cascade lasers with coupled cavities for gas detection

AU - Fuchs, Peter

AU - Seufert, Jochen

AU - Koeth, Johannes

AU - Semmel, Julia

AU - Höfling, Sven

AU - Worschech, Lukas

AU - Forchel, Alfred

PY - 2010/11/1

Y1 - 2010/11/1

N2 - The authors report the fabrication of widely tunable monolithic quantum cascade lasers (QCLs) with coupled Fabry-Perot (FP) cavities on indium phosphide. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8.394 and 8.785 mu m. An absorption experiment with ammonia shows principle feasibility of gas detection with multisegment QCL devices. Good agreement of the experimentally observed tuning behavior with the one expected from calculated FP mode-combs indicates that the change in the refractive index is mainly due to thermal heating as a result of current injection. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514247]

AB - The authors report the fabrication of widely tunable monolithic quantum cascade lasers (QCLs) with coupled Fabry-Perot (FP) cavities on indium phosphide. Quasicontinuous tuning of the single mode emission over a total spectral range of 242 nm was realized at two regions between 8.394 and 8.785 mu m. An absorption experiment with ammonia shows principle feasibility of gas detection with multisegment QCL devices. Good agreement of the experimentally observed tuning behavior with the one expected from calculated FP mode-combs indicates that the change in the refractive index is mainly due to thermal heating as a result of current injection. (C) 2010 American Institute of Physics. [doi:10.1063/1.3514247]

KW - LINEWIDTH ENHANCEMENT FACTOR

KW - HIGH-AVERAGE-POWER

KW - ROOM-TEMPERATURE

KW - MU-M

KW - DISTRIBUTED-FEEDBACK

KW - SINGLE-MODE

U2 - 10.1063/1.3514247

DO - 10.1063/1.3514247

M3 - Article

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 18

M1 - 181111

ER -

Widely tunable quantum cascade lasers with coupled cavities for gas detection

Abstract

Keywords

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