NDLI: Single-wavelength InGaAs/AlAs(Sb) quantum cascade lasers

Content Provider	IEEE Xplore Digital Library
Author	Slight, T. Phelan, R. Revin, D. McKee, A. Cockburn, J. Kelly, B. Ironside, C.
Copyright Year	2011
Description	Author affiliation: Department of Physics and Astronomy, University of Sheffield, S3 7RH, United Kingdom (Revin, D.; Cockburn, J.) \|\| Compound Semiconductor Technologies Global Ltd, Hamilton International Park, Hamilton G72, 0BN, United Kingdom (Slight, T.; McKee, A.) \|\| School of Engineering, University of Glasgow, G12 8LT, United Kingdom (Ironside, C.) \|\| Eblana Photonics, Trinity College Enterprise Centre, Pearse Street, Dublin 2, Ireland (Phelan, R.; Kelly, B.)
Abstract	Recently, significant progress has been made in the development of short-wavelength quantum-cascade lasers (QCLs) emitting in the 3–4 µm wavelength range [1], where many molecular species of interest have their strongest rotational-vibrational absorption bands. A laser designed for gas sensing applications must have a narrow spectral width in order to differentiate between the fine features of the unique absorption fingerprint of the gas. Using a distributed-feedback (DFB) design, single-wavelength operation is achieved with a first order lateral grating [2] etched in the same step as the laser cavity (Fig. 1) Driven pulsed at a temperature of 303 K, emission was at a wavelength of 3.35 µm (Fig. 2) with a side mode suppression ratio (SMSR) of 24 dB. In the discrete-mode (DM) design index perturbations were introduced in to the laser cavity [3]. The features modify the Fabry-Pérot (FP) cavity loss spectrum such that lasing is in a single FP mode. Driven pulsed at a temperature of 300 K, emission was at wavelength of 3.31 µm (Fig.3) with a SMSR of 25 dB.
Starting Page	1
Ending Page	2
File Size	534519
Page Count	2
File Format	PDF
ISBN	9781457717536
e-ISBN	9783800733569
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-22
Publisher Place	Germany
Access Restriction	Subscribed
Rights Holder	VDE
Subject Keyword	Quantum cascade lasers Cavity resonators Delta modulation Gratings Indium phosphide Laser modes
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Recent progress in short wavelength quantum cascade lasers

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Post-fabrication wavelength selection and spectral narrowing of Quantum Cascade lasers via application of a shallow distributed Bragg reflector

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High-speed wavelength modulation in quantum cascade laser

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InGaAs/InP subwavelength grating filters for the mid-infrared

Single-wavelength InGaAs/AlAs(Sb) quantum cascade lasers

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