Implementation of temporal ptychography algorithm, i 2 PIE, for improved single-beam coherent anti-Stokes Raman scattering measurements

Viljoen, Ruan; Neethling, Pieter; Spangenberg, Dirk; Heidt, Alexander; Frey, Hans-Martin; Feurer, Thomas; Rohwer, Erich (2020). Implementation of temporal ptychography algorithm, i 2 PIE, for improved single-beam coherent anti-Stokes Raman scattering measurements. Journal of the Optical Society of America. B - optical physics, 37(11), A259-A265. Optical Society of America 10.1364/JOSAB.399207

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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, i2PIE
. 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, i2PIE
using the same single-beam setup. With the i2PIE
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.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Spangenberg, Dirk-Mathys; Heidt, Alexander; Frey, Hans-Martin and Feurer, Thomas

Subjects:

500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

0740-3224

Publisher:

Optical Society of America

Funders:

[UNSPECIFIED] CSIR National Laser Center
[UNSPECIFIED] National Research Foundation
[UNSPECIFIED] Photonics Initiative of South Africa
[4] Swiss National Science Foundation

Language:

English

Submitter:

Alexander Heidt

Date Deposited:

09 Sep 2020 14:24

Last Modified:

09 Sep 2020 14:24

Publisher DOI:

10.1364/JOSAB.399207

BORIS DOI:

10.7892/boris.146443

URI:

https://boris.unibe.ch/id/eprint/146443

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