Optical autocorrelator that uses a surface-emitting second-harmonic generator on (211)B GaAs

N.D. Whitbread, John A.R. Williams, J.S. Roberts, Ian Bennion, P.N. Robson

Research output: Contribution to journalArticlepeer-review


An optical autocorrelator grown on a (211)B GaAs substrate that uses visible surface-emitted second-harmonic generation is demonstrated. The (211)B orientation needs TE mode excitation only, thus eliminating the problem of the beating between the TE and TM modes that is required for (100)-grown devices; it also has the advantage of giving higher upconversion efficiency than (111) growth. Values of waveguide loss and the difference in the effective refractive index between the TE(0) and TE(1) modes were also obtained from the autocorrelation experiment.
Original languageEnglish
Pages (from-to)2089-2091
Number of pages3
JournalOptics Letters
Issue number24
Publication statusPublished - Dec 1994

Bibliographical note

This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/abstract.cfm?URI=ol-19-24-2089 Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.


  • optical autocorrelator
  • visible surface-emitted second-harmonic generation
  • TE and TM modes
  • refractive index


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