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

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...

Full description

Saved in:
Bibliographic Details
Published in:Optics letters 2018-08, Vol.43 (15), p.3481-3484
Main Authors: Petrov, N V, Nalegaev, S S, Belashov, A V, Shevkunov, I A, Putilin, S E, Lin, Y C, Cheng, C J
Format: Article
Language:English
Subjects:
Collimation
Computer simulation
Data acquisition
Data processing
Holograms
Holography
Mathematical models
Noise sensitivity
Phase modulation
Refractivity
Relaxation time
Signal processing
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.43.003481