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Title: Optical nonlinearities and ultrafast all-optical switching of m-plane GaN in the near-infrared

We reported a systematic investigation on the three-photon absorption (3PA) spectra and wavelength dispersion of Kerr refraction of bulk m-plane GaN crystal with both polarization E⊥c and E//c by femtosecond Z-scan technique in the near-infrared region from 760 to 1030 nm. Both 3PA spectra and Kerr refraction dispersion were in good agreement with two-band models. The calculated nonlinear figure of merit and measured ultrafast nonlinear refraction dynamics via femtosecond pump-probe with phase object method revealed that m-plane GaN would be a promising candidate for ultrafast all-optical switching and autocorrelation applications at telecommunication wavelengths.
Authors:
; ; ;  [1] ; ;  [2] ;  [1] ;  [3]
  1. College of Physics, Optoelectronics and Energy, Soochow University, 215006 Suzhou (China)
  2. Department of Physics, Harbin Institute of Technology, 150001 Harbin (China)
  3. (China)
Publication Date:
OSTI Identifier:
22483087
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 25; 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; ABSORPTION; CRYSTALS; DISPERSIONS; GALLIUM NITRIDES; NONLINEAR PROBLEMS; PERFORMANCE; PHOTONS; POLARIZATION; PUMPS; REFRACTION; SPECTRA; WAVELENGTHS