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Title: Broadly continuously tunable slot waveguide quantum cascade lasers based on a continuum-to-continuum active region design

We report our progress in the development of broadly tunable single-mode slot waveguide quantum cascade lasers based on a continuum-to-continuum active region design. The electroluminescence spectrum of the continuum-to-continuum active region design has a full width at half maximum of 440 cm{sup −1} at center wavelength ∼10 μm at room temperature (300 K). Devices using the optimized slot waveguide structure and the continuum-to-continuum design can be tuned continuously with a lasing emission over 42 cm{sup −1}, from 9.74 to 10.16 μm, at room temperature by using only current tuning scheme, together with a side mode suppression ratio of above 15 dB within the whole tuning range.
Authors:
; ; ; ;  [1] ;  [2] ;  [1] ;  [2] ;  [2] ;  [1] ;  [2]
  1. OPTIMUS, Centre for OptoElectronics and Biophotonics, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, Singapore 639798 (Singapore)
  2. (Singapore)
Publication Date:
OSTI Identifier:
22482071
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 11; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; CURRENTS; DESIGN; ELECTROLUMINESCENCE; LASERS; SPECTRA; TEMPERATURE RANGE 0273-0400 K; TUNING; WAVEGUIDES; WAVELENGTHS; WIDTH