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Title: Mode stability in photonic-crystal surface-emitting lasers with large κ{sub 1D}L

We study mode stability in photonic-crystal surface-emitting lasers (PCSELs) with large coupling-coefficient-length product κ{sub 1D}L(>6). We observe that mode competition occurs at high current levels above threshold. Our combined experimental and theoretical study provides the first evidence of the mode competition originating from the high-order band-edge modes. The decreased threshold margin between these competing high-order modes and the main lasing mode with increasing cavity length as well as the spatial hole burning effect may deteriorate the single-mode stability. Our finding is essential for designing single-mode high-power PCSELs for which the strategy to suppress the high-order modes must be considered.
Authors:
; ; ;  [1] ;  [1] ;  [2] ;  [1] ;  [3]
  1. Department of Electronic Science and Engineering, Kyoto University, Kyoto 615-8510 (Japan)
  2. (Japan)
  3. (China)
Publication Date:
OSTI Identifier:
22275809
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 104; Journal Issue: 2; 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; COUPLING; CRYSTALS; LANTHANUM SELENIDES; LASER CAVITIES; LASERS