Eliminate coherence spike in reflection-type pump-probe measurements

Chih-Wei Luo, Y. T. Wang, F. W. Chen, H. C. Shih, T. Kobayashi

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


The coherence spike of femtosecond laser pulses in the reflection-type pump-probe measurements has been systematically studied in the semiconductor (100) InP. By varying the setup of the pump-probe measuring system, i.e. the polarizations of pump and probe pulses, the incident angles of pump and probe beams, and the interval of delay time between pump and probe pulses, the dramatic changes in the strength of coherence spike could be clear observed. Furthermore, the proposed methods to remove the coherence spike from the transient reflectivity curves have been demonstrated in the time-domain measurements.

Original languageEnglish
Pages (from-to)11321-11327
Number of pages7
JournalOptics Express
Issue number14
StatePublished - 6 Jul 2009


  • (260.7120) Ultrafast phenomena
  • (300.6500) Spectroscopy, time-resolved
  • (320.7100) Ultrafast measurement

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