Implementation of temporal ptychography algorithm, I$^2$PIE, for improved single-beam coherent anti-Stokes Raman scattering measurements
Abstract
We present an improvement on the signal-to-background of single-beam coherent anti-Stokes Raman scattering (SB-CARS) spectroscopy measurements for systems employing ultrafast supercontinuum sources based on all-normal dispersion photonic crystal fibers. Improvements to the signal-to-background arise in the use of a new pulse-reconstruction algorithm based on temporal ptychography, IPIE. A simple SB-CARS strategy is used to measure the spectrum of para-xylene, where the supercontinuum pulses used are compressed using multiphoton intrapulse interference phase scan (MIIPS) and, for the first time to the best of our knowledge, IPIE using the same single-beam setup. With the IPIE implementation, the signal-to-background is improved by nearly a factor of 4 in comparison with MIIPS. More notably, the integrated SB-CARS spectral intensity is increased by a factor of 6.5.
Keywords
Cite
@article{arxiv.2009.04734,
title = {Implementation of temporal ptychography algorithm, I$^2$PIE, for improved single-beam coherent anti-Stokes Raman scattering measurements},
author = {Ruan Viljoen and Pieter Neethling and Dirk Spangenberg and Alexander Heidt and Hans-Martin Frey and Thomas Feurer and Erich Rohwer},
journal= {arXiv preprint arXiv:2009.04734},
year = {2020}
}
Comments
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