Nonlinear spectrometer for characterization of organic and polymeric molecules

Raluca A. Negres, Eric W. Van Stryland, David J. Hagan, Kevin D. Belfield, Katherine J. Schafer, Olga V. Przhonska, Bruce A. Reinhardt

Research output: Contribution to journalConference articlepeer-review

15 Scopus citations


We have developed a femtosecond continuum spectrometer to measure nonlinear absorption spectra from 300 nm in the UV to 1.7 μm in the IR. This method is applied for measuring NLA spectra of semiconductor, organic and polymeric materials. The pump-probe nature of the experiment also allows the temporal response to be determined, thus helping in the determining of the underlying physical mechanisms for the nonlinearity. We describe studies of two-photon absorption in a series of alkyl fluorenes and excited state absorption dynamics in a series of polymethines using this spectrometer.

Original languageEnglish (US)
Pages (from-to)88-97
Number of pages10
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 Organic Nonlinear Optical Materials - Denver, CO, USA
Duration: Jul 19 1999Jul 22 1999

All Science Journal Classification (ASJC) codes

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


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