Inverted field interferometer for measuring the topological charges of optical vortices carried by short pulses
Dimitrov N, Zhekova M, Paulus GG, Dreischuh A (2020)
Publication Type: Journal article
Publication year: 2020
Journal
Book Volume: 456
Article Number: 124530
DOI: 10.1016/j.optcom.2019.124530
Abstract
In this work, we present an improved technique for measuring both the magnitude and sign of the topological charge of input optical vortex beams carried by short laser pulses. Numerical simulations and experimental evidences for the interference signal obtainable at the output of an inverted field interferometer (IFI) valid for both continuous wave and femtosecond optical vortex beams and pulses with an eventual pulse front tilt are in an excellent agreement. An IFI also appears to be a valuable tool for calibrating a built-in variable delay line and for estimating an eventual pulse front tilt of the input ultrashort laser pulses without any realignments. As a trivial side effect, by blocking alternatively one of the two arms of the interferometer, one can use OV beams/pulses of opposite TCs, which are well located in the plane of a desired target, eventually — at precisely known time delays.
Involved external institutions
Hl. Kliment Ochridski-Universität Sofia
Bulgaria (BG)
Friedrich-Schiller-Universität Jena
Germany (DE)
Bulgaria (BG)
Friedrich-Schiller-Universität Jena
Germany (DE)
How to cite
APA:
Dimitrov, N., Zhekova, M., Paulus, G.G., & Dreischuh, A. (2020). Inverted field interferometer for measuring the topological charges of optical vortices carried by short pulses. Optics Communications, 456. https://dx.doi.org/10.1016/j.optcom.2019.124530
MLA:
Dimitrov, Nikolay, et al. "Inverted field interferometer for measuring the topological charges of optical vortices carried by short pulses." Optics Communications 456 (2020).
BibTeX: Download