Time-resolved inline digital holography for the study of noncollinear degenerate phase modulation

N. V. Petrov*, S. S. Nalegaev, A. V. Belashov, I. A. Shevkunov, S. E. Putilin, Y. C. Lin, C. J. Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Recent works demonstrated that digital time-resolved holography is the prospective approach to study nonlinear light–matter interaction processes. In this Letter, we present a straightforward inline holographic approach for studying degenerate phase modulation induced by an inclined collimated pump beam in the isotropic sample. The method is based on a minimization of the difference between experimentally acquired data and simulated inline holograms obtained from a numerical model of pump–probe interaction in optical nonlinear media. A sophisticated experimental data processing algorithm is implemented to provide high sensitivity and a signal-to-noise ratio eligible for soft interaction with a collimated pump beam. The integral phase shift determined by our method can be used to estimate the nonlinear refractive index and the relaxation time for material with a low damage threshold. We validated our approach for the case of soda-lime and BK7 glasses.

Original languageEnglish
Pages (from-to)3481-3484
Number of pages4
JournalOptics Letters
Issue number15
Publication statusPublished - 2018 Aug 1

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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