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Nonlinear absorption of CS 2 at the wavelength of 400 nm with femtosecond pulses

  • Heilongjiang University
  • Harbin Institute of Technology
  • Soochow University

Research output: Contribution to journalArticlepeer-review

Abstract

Nonlinear absorption of carbon disulfide (CS 2) was investigated by Z-scan technique and time-resolved pumpprobe technique with femtosecond pulses at 400 nm wavelength. By the two techniques, we confirmed that the nonlinear absorption of CS 2 arise from a combination of two-photon absorption (TPA) and the excited state absorption induced by TPA under the incident laser pulses with 400 nm wavelength. The coefficient of TPA, the absorption cross-section of low excited state and lifetime of low excited state were obtained by theoretical fitting the experimental results. The results indicated that the CS 2 has good optical limiting capability at 400 nm wavelength.

Original languageEnglish
Pages (from-to)1279-1281
Number of pages3
JournalPhysica B: Condensed Matter
Volume407
Issue number8
DOIs
StatePublished - 15 Apr 2012

Keywords

  • Excited state aborption
  • Femtosecond
  • Two-photon absorption

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