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Ultrafast nonlinear refraction in integrated Fabry-Perot etalon containing polydiacetylene

  • M. Bakarezos
  • , M. A. Camacho
  • , I. J. Blewett
  • , Ajoy Kumar Kar
  • , Brian Spencer Wherrett
  • , H. Matsuda
  • , T. Fukuda
  • , S. Yamada
  • , R. Rangel-Rojo
  • , H. Katagi
  • , H. Kasai
  • , S. Okada
  • , H. Nakanishi

Research output: Contribution to journalArticlepeer-review

Abstract

A nonlinear integrated Fabry-Perot etalon containing poly-1,6-dicarbazolyl-2,4-hexadiyne (poly-DCHD) nanocrystals has been fabricated. Time-resolved fringe shifts following picosecond excitation at 645 nm are monitored with a broadband white-light-continuum probe. The shift towards shorter wavelengths indicates a negative refractive index change. The magnitude of the refractive cross-section is found to be 1.6×10-21 cm3, at a wavelength of approximately 700 nm, suggesting that polydiacetylene nanocrystal thin films are well suited for Fabry-Perot bared all-optical switching devices.

Original languageEnglish
Pages (from-to)1078-1079
Number of pages2
JournalElectronics Letters
Volume35
Issue number13
DOIs
Publication statusPublished - 24 Jun 1999

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