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Title: Continuous wave room temperature external ring cavity quantum cascade laser

An external ring cavity quantum cascade laser operating at ∼5.2 μm wavelength in a continuous-wave regime at the temperature of 15 °C is demonstrated. Out-coupled continuous-wave optical powers of up to 23 mW are observed for light of one propagation direction with an estimated total intra-cavity optical power flux in excess of 340 mW. The uni-directional regime characterized by the intensity ratio of more than 60 for the light propagating in the opposite directions was achieved. A single emission peak wavelength tuning range of 90 cm{sup −1} is realized by the incorporation of a diffraction grating into the cavity.
Authors:
; ; ;  [1] ; ; ;  [2]
  1. Physics and Astronomy Department, The University of Sheffield, S3 7RH Sheffield (United Kingdom)
  2. M Squared Lasers Ltd., G20 0SP Glasgow (United Kingdom)
Publication Date:
OSTI Identifier:
22483104
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 26; 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; DIFFRACTION GRATINGS; EMISSION; LASERS; PEAKS; TEMPERATURE RANGE 0273-0400 K; TUNING; VISIBLE RADIATION; WAVELENGTHS