Coherent coupling of ring cavity surface emitting quantum cascade lasers

Clemens Schwarzer, Elvis Mujagić, Yu Yao, Werner Schrenk, Jianxin Chen, Claire Gmachl, Gottfried Strasser

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We present investigations on coherent coupling of surface emitting quantum cascade lasers (QCLs). For this purpose, the evanescent field coupling method is exploited under incorporation of a ring cavity surface emitting QCL pair with an emission wavelength of ≈8 μm. A series of these pairs with intercavity separations of 1 and 3 μm was fabricated. The coupling gap of 1 μm yields robust phase-locked light source pairs with coherent emission at all injection currents and a corresponding threshold current density of 2.65 kA/cm2 at room-temperature.

Original languageEnglish (US)
Article number071103
JournalApplied Physics Letters
Volume97
Issue number7
DOIs
StatePublished - Aug 16 2010
Externally publishedYes

Fingerprint

quantum cascade lasers
surface emitting lasers
cavities
rings
threshold currents
light sources
injection
current density
room temperature
wavelengths

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Schwarzer, C., Mujagić, E., Yao, Y., Schrenk, W., Chen, J., Gmachl, C., & Strasser, G. (2010). Coherent coupling of ring cavity surface emitting quantum cascade lasers. Applied Physics Letters, 97(7), [071103]. https://doi.org/10.1063/1.3479913

Coherent coupling of ring cavity surface emitting quantum cascade lasers. / Schwarzer, Clemens; Mujagić, Elvis; Yao, Yu; Schrenk, Werner; Chen, Jianxin; Gmachl, Claire; Strasser, Gottfried.

In: Applied Physics Letters, Vol. 97, No. 7, 071103, 16.08.2010.

Research output: Contribution to journalArticle

Schwarzer, C, Mujagić, E, Yao, Y, Schrenk, W, Chen, J, Gmachl, C & Strasser, G 2010, 'Coherent coupling of ring cavity surface emitting quantum cascade lasers', Applied Physics Letters, vol. 97, no. 7, 071103. https://doi.org/10.1063/1.3479913
Schwarzer C, Mujagić E, Yao Y, Schrenk W, Chen J, Gmachl C et al. Coherent coupling of ring cavity surface emitting quantum cascade lasers. Applied Physics Letters. 2010 Aug 16;97(7). 071103. https://doi.org/10.1063/1.3479913
Schwarzer, Clemens ; Mujagić, Elvis ; Yao, Yu ; Schrenk, Werner ; Chen, Jianxin ; Gmachl, Claire ; Strasser, Gottfried. / Coherent coupling of ring cavity surface emitting quantum cascade lasers. In: Applied Physics Letters. 2010 ; Vol. 97, No. 7.
@article{084607266ab44ef08b6ddfdb94551760,
title = "Coherent coupling of ring cavity surface emitting quantum cascade lasers",
abstract = "We present investigations on coherent coupling of surface emitting quantum cascade lasers (QCLs). For this purpose, the evanescent field coupling method is exploited under incorporation of a ring cavity surface emitting QCL pair with an emission wavelength of ≈8 μm. A series of these pairs with intercavity separations of 1 and 3 μm was fabricated. The coupling gap of 1 μm yields robust phase-locked light source pairs with coherent emission at all injection currents and a corresponding threshold current density of 2.65 kA/cm2 at room-temperature.",
author = "Clemens Schwarzer and Elvis Mujagić and Yu Yao and Werner Schrenk and Jianxin Chen and Claire Gmachl and Gottfried Strasser",
year = "2010",
month = "8",
day = "16",
doi = "10.1063/1.3479913",
language = "English (US)",
volume = "97",
journal = "Applied Physics Letters",
issn = "0003-6951",
publisher = "American Institute of Physics Publising LLC",
number = "7",

}

TY - JOUR

T1 - Coherent coupling of ring cavity surface emitting quantum cascade lasers

AU - Schwarzer, Clemens

AU - Mujagić, Elvis

AU - Yao, Yu

AU - Schrenk, Werner

AU - Chen, Jianxin

AU - Gmachl, Claire

AU - Strasser, Gottfried

PY - 2010/8/16

Y1 - 2010/8/16

N2 - We present investigations on coherent coupling of surface emitting quantum cascade lasers (QCLs). For this purpose, the evanescent field coupling method is exploited under incorporation of a ring cavity surface emitting QCL pair with an emission wavelength of ≈8 μm. A series of these pairs with intercavity separations of 1 and 3 μm was fabricated. The coupling gap of 1 μm yields robust phase-locked light source pairs with coherent emission at all injection currents and a corresponding threshold current density of 2.65 kA/cm2 at room-temperature.

AB - We present investigations on coherent coupling of surface emitting quantum cascade lasers (QCLs). For this purpose, the evanescent field coupling method is exploited under incorporation of a ring cavity surface emitting QCL pair with an emission wavelength of ≈8 μm. A series of these pairs with intercavity separations of 1 and 3 μm was fabricated. The coupling gap of 1 μm yields robust phase-locked light source pairs with coherent emission at all injection currents and a corresponding threshold current density of 2.65 kA/cm2 at room-temperature.

UR - http://www.scopus.com/inward/record.url?scp=77956048342&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77956048342&partnerID=8YFLogxK

U2 - 10.1063/1.3479913

DO - 10.1063/1.3479913

M3 - Article

AN - SCOPUS:77956048342

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

IS - 7

M1 - 071103

ER -