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Title: Mode-locked terahertz quantum cascade laser by direct phase synchronization

Mode-locking of a terahertz quantum cascade laser is achieved using multimode injection seeding. Contrary to standard methods that rely on gain modulation, here a fixed phase relationship is directly imprinted to the laser modes. In this work, we demonstrate the generation of 9 ps phase mode-locked pulses around 2.75 THz. A direct measurement of the emitted field phase shows that it results from the phase of the initial injection.
Authors:
; ; ; ; ; ;  [1] ; ; ;  [2] ; ;  [3]
  1. Laboratoire Pierre Aigrain, Ecole Normale Supérieure, CNRS (UMR 8551), Université P. et M. Curie, Université D. Diderot, 75005 Paris (France)
  2. School of Electronic and Electrical Engineering, University of Leeds, Leeds LS9 2JT (United Kingdom)
  3. University of Cambridge, Cavendish Lab, Cambridge CB3 0HE (United Kingdom)
Publication Date:
OSTI Identifier:
22261915
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1566; Journal Issue: 1; Conference: ICPS 2012: 31. international conference on the physics of semiconductors, Zurich (Switzerland), 29 Jul - 3 Aug 2012; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; EMISSION; LASERS; MODE LOCKING; PULSES; SYNCHRONIZATION