High-power spiral cavity quantum cascade superluminescent emitters with a passive loop back facet

Mei C. Zheng; Yezhezi M. Zhang; Peter Q. Liu; Xiaojun Wang; Jen Yu Fan; Mariano Troccoli; Claire F. Gmachl

doi:10.1117/1.OE.57.1.011001

High-power spiral cavity quantum cascade superluminescent emitters with a passive loop back facet

Mei C. Zheng, Yezhezi M. Zhang, Peter Q. Liu, Xiaojun Wang, Jen Yu Fan, Mariano Troccoli, Claire F. Gmachl

Biochemistry, Chemistry, & Physics

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

6 Scopus citations

Abstract

We report on the experimental demonstration of a high-power (>100mW) quantum cascade superluminescent (SL) emitter employing a spiral cavity with a passive loop back facet. By replacing the rounded, wet-etched, antireflection coated back facet of a spiral cavity with a passive loop facet, the lasing action was suppressed (i.e., threshold current density increased) due to a decrease in the back facet reflectivity. This type of facet allowed us to achieve a twofold increase in the peak SL power by employing a 16-mm-long spiral cavity.

Original language	English
Article number	011001
Journal	Optical Engineering
Volume	57
Issue number	1
DOIs	https://doi.org/10.1117/1.OE.57.1.011001
State	Published - Jan 1 2018

Keywords

infrared lasers
optical design
semiconductor lasers

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10.1117/1.OE.57.1.011001

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title = "High-power spiral cavity quantum cascade superluminescent emitters with a passive loop back facet",

abstract = "We report on the experimental demonstration of a high-power (>100mW) quantum cascade superluminescent (SL) emitter employing a spiral cavity with a passive loop back facet. By replacing the rounded, wet-etched, antireflection coated back facet of a spiral cavity with a passive loop facet, the lasing action was suppressed (i.e., threshold current density increased) due to a decrease in the back facet reflectivity. This type of facet allowed us to achieve a twofold increase in the peak SL power by employing a 16-mm-long spiral cavity.",

keywords = "infrared lasers, optical design, semiconductor lasers",

author = "Zheng, {Mei C.} and Zhang, {Yezhezi M.} and Liu, {Peter Q.} and Xiaojun Wang and Fan, {Jen Yu} and Mariano Troccoli and Gmachl, {Claire F.}",

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AU - Zheng, Mei C.

AU - Zhang, Yezhezi M.

AU - Liu, Peter Q.

AU - Wang, Xiaojun

AU - Fan, Jen Yu

AU - Troccoli, Mariano

AU - Gmachl, Claire F.

PY - 2018/1/1

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N2 - We report on the experimental demonstration of a high-power (>100mW) quantum cascade superluminescent (SL) emitter employing a spiral cavity with a passive loop back facet. By replacing the rounded, wet-etched, antireflection coated back facet of a spiral cavity with a passive loop facet, the lasing action was suppressed (i.e., threshold current density increased) due to a decrease in the back facet reflectivity. This type of facet allowed us to achieve a twofold increase in the peak SL power by employing a 16-mm-long spiral cavity.

AB - We report on the experimental demonstration of a high-power (>100mW) quantum cascade superluminescent (SL) emitter employing a spiral cavity with a passive loop back facet. By replacing the rounded, wet-etched, antireflection coated back facet of a spiral cavity with a passive loop facet, the lasing action was suppressed (i.e., threshold current density increased) due to a decrease in the back facet reflectivity. This type of facet allowed us to achieve a twofold increase in the peak SL power by employing a 16-mm-long spiral cavity.

KW - infrared lasers

KW - optical design

KW - semiconductor lasers

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ER -

High-power spiral cavity quantum cascade superluminescent emitters with a passive loop back facet

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