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Title: Integrated patch and slot array antenna for terahertz quantum cascade lasers at 4.7 THz

Our work presents a slot and a patch array antenna at the front facet of a 4.7 THz quantum cascade laser as extractor, decreasing the facet reflectivity down to 2.6%. The resulting output power increases by a factor 2 and the slope efficiency by a factor 4. The simulated and the measured far-fields are in good agreement.
Authors:
; ; ; ; ;  [1]
  1. Institute for Quantum Electronics, ETH-Zürich, CH-8093 Zürich (Switzerland)
Publication Date:
OSTI Identifier:
22262574
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 16; Other Information: (c) 2014 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; ANTENNAS; EFFICIENCY; LASERS; REFLECTIVITY