Ultrafast nonlinearity in polydiacetylene microcrystals

R. Rangel-Rojo, H. Matsuda, H. Kasai, H. Nakanishi

Research output: Contribution to journalConference articlepeer-review


We report the study of the dynamics of the third-order nonlinear optical response of polydiacetylene micro-crystals. The material employed is the polydiacetylene know as poly-DCHD, and the micro-crystals were 100 nm in diameter contained in an aqueous suspension. Experimental results for transient changes in transmission measured by a time-resolved excite-probe technique, conducted with l00fs pulses at 850 nm from a mode-locked Ti:sapphire laser are presented. A discussion of the role of the excitonic origin of the nonlinear response is also presented.

Original languageEnglish
Pages (from-to)396
Number of pages1
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4829 I
Publication statusPublished - 2003
Event19th Congress of the International Commisssion for Optics Optics for the Quality of Life - Firenze, Italy
Duration: 2002 Aug 252002 Aug 30

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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