Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature

Sven Höfling; J. Heinrich; H. Hofmann; M. Kamp; J. P. Reithmaier; A. Forchel; J. Seufert

doi:10.1063/1.2387115

Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature

Sven Höfling, J. Heinrich, H. Hofmann, M. Kamp, J. P. Reithmaier, A. Forchel, J. Seufert

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

Abstract

The authors have fabricated GaAs/Al0.45Ga0.55As quantum cascade lasers (QCLs) with two-dimensional photonic crystal (PhC) mirrors. The monolithically integrated PhC mirrors consist of a triangular lattice of similar to 14 mu m deeply etched semiconductor pillars. The PhC is designed to exhibit a photonic band gap for both the Gamma M and the Gamma K crystal orientation and provides reflectivities of > 80%. Compared to a reference laser with the same cavity length of 600 mu m but as-cleaved facets, the QCLs with Gamma M and Gamma K oriented PhCs show reductions of the threshold current by 34% and 30%, respectively. (c) 2006 American Institute of Physics.

Original language	English
Article number	191113
Number of pages	3
Journal	Applied Physics Letters
Volume	89
Issue number	19
DOIs	https://doi.org/10.1063/1.2387115
Publication status	Published - 6 Nov 2006

Keywords

ETCHED BRAGG-MIRRORS
SEMICONDUCTOR
REFLECTORS
PERFORMANCE

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10.1063/1.2387115

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title = "Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature",

abstract = "The authors have fabricated GaAs/Al0.45Ga0.55As quantum cascade lasers (QCLs) with two-dimensional photonic crystal (PhC) mirrors. The monolithically integrated PhC mirrors consist of a triangular lattice of similar to 14 mu m deeply etched semiconductor pillars. The PhC is designed to exhibit a photonic band gap for both the Gamma M and the Gamma K crystal orientation and provides reflectivities of > 80\%. Compared to a reference laser with the same cavity length of 600 mu m but as-cleaved facets, the QCLs with Gamma M and Gamma K oriented PhCs show reductions of the threshold current by 34\% and 30\%, respectively. (c) 2006 American Institute of Physics.",

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author = "Sven H{\"o}fling and J. Heinrich and H. Hofmann and M. Kamp and Reithmaier, \{J. P.\} and A. Forchel and J. Seufert",

year = "2006",

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day = "6",

doi = "10.1063/1.2387115",

language = "English",

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publisher = "American Institute of Physics",

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TY - JOUR

T1 - Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature

AU - Höfling, Sven

AU - Heinrich, J.

AU - Hofmann, H.

AU - Kamp, M.

AU - Reithmaier, J. P.

AU - Forchel, A.

AU - Seufert, J.

PY - 2006/11/6

Y1 - 2006/11/6

N2 - The authors have fabricated GaAs/Al0.45Ga0.55As quantum cascade lasers (QCLs) with two-dimensional photonic crystal (PhC) mirrors. The monolithically integrated PhC mirrors consist of a triangular lattice of similar to 14 mu m deeply etched semiconductor pillars. The PhC is designed to exhibit a photonic band gap for both the Gamma M and the Gamma K crystal orientation and provides reflectivities of > 80%. Compared to a reference laser with the same cavity length of 600 mu m but as-cleaved facets, the QCLs with Gamma M and Gamma K oriented PhCs show reductions of the threshold current by 34% and 30%, respectively. (c) 2006 American Institute of Physics.

AB - The authors have fabricated GaAs/Al0.45Ga0.55As quantum cascade lasers (QCLs) with two-dimensional photonic crystal (PhC) mirrors. The monolithically integrated PhC mirrors consist of a triangular lattice of similar to 14 mu m deeply etched semiconductor pillars. The PhC is designed to exhibit a photonic band gap for both the Gamma M and the Gamma K crystal orientation and provides reflectivities of > 80%. Compared to a reference laser with the same cavity length of 600 mu m but as-cleaved facets, the QCLs with Gamma M and Gamma K oriented PhCs show reductions of the threshold current by 34% and 30%, respectively. (c) 2006 American Institute of Physics.

KW - ETCHED BRAGG-MIRRORS

KW - SEMICONDUCTOR

KW - REFLECTORS

KW - PERFORMANCE

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U2 - 10.1063/1.2387115

DO - 10.1063/1.2387115

M3 - Article

SN - 0003-6951

VL - 89

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 19

M1 - 191113

ER -

Photonic crystal quantum cascade lasers with improved threshold characteristics operating at room temperature

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