Nanosecond and picosecond nonlinear absorption studies of a highly nonlinear organic liquid for optical limiting application

I. C. Khoo, P. H. Chen, M. V. Wood, Mary J. Miller, Andy Mott, Michael J. Ferry

Research output: Contribution to journalConference articlepeer-review

Abstract

Nonlinear transmission and optical limiting of picosecond and nanosecond laser pulses in an organic fiber core liquid are investigated. The measured effective absorption coefficients and other limiting characteristics are analyzed using a model that accounts for linear, two-photon, intermediate, and excited-state absorptions. In the picosecond regime, two-photon absorption process is the dominant mechanism. On the other hand, in the nanosecond and longer time scale, other processes such as excited state absorption and nonlinear scattering contribute significantly, giving rise to an effective nonlinear absorption coefficient that can be two orders of magnitude larger than the picosecond counterpart.

Original languageEnglish (US)
Pages (from-to)46-57
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3798
StatePublished - Dec 1 1999
EventProceedings of the 1999 Power-Limiting Materials and Devices - Denver, CO, USA
Duration: Jul 21 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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