<  Back to the Polytechnique Montréal portal

Optical power limiter in the femtosecond filamentation regime

Leonidas Agiotis and Michel Meunier

Article (2021)

Open Acess document in PolyPublie and at official publisher
[img]
Preview
Open Access to the full text of this document
Published Version
Terms of Use: Creative Commons Attribution
Download (2MB)
Show abstract
Hide abstract

Abstract

We present the use of a power limiting apparatus to evaluate ultrafast optical nonlinearities of transparent liquids (water and ethanol) in the femtosecond filamentation regime. The setup has been previously employed for the same purpose, however, in a longer pulsewidth (> 20 ps) regime, which leads to an ambiguous evaluation of the critical power for self-focusing. The uncertainty originates from the existence of a threshold power for optical breakdown well below the critical power for self-focusing within this timeframe. Contrarily, using the proposed apparatus in the femtosecond regime, we observe for the first time a unique optical response, which features the underlying physics of laser filamentation. Importantly, we demonstrate a dependence of the optical transmission of the power limiter on its geometrical, imaging characteristics and the conditions under which a distinct demarcation for the critical power for self-focusing can be determined. The result is supported by numerical simulations, which indicate that the features of the observed power-dependent optical response of the power limiting setup are physically related to the spontaneous transformation of the laser pulses into nonlinear conical waves.

Uncontrolled Keywords

Nonlinear optics ; Optical techniques

Subjects: 3100 Physics > 3100 Physics
3100 Physics > 3110 Optics (see also Photon devices, 2505)
3100 Physics > 3111 Lasers
Department: Department of Engineering Physics
Research Center: Other
Funders: GRSNG / NSERC
PolyPublie URL: https://publications.polymtl.ca/9297/
Journal Title: Scientific Reports (vol. 11, no. 1)
Publisher: Springer Nature
DOI: 10.1038/s41598-021-93683-x
Official URL: https://doi.org/10.1038/s41598-021-93683-x
Date Deposited: 27 Feb 2023 11:42
Last Modified: 10 Apr 2024 23:18
Cite in APA 7: Agiotis, L., & Meunier, M. (2021). Optical power limiter in the femtosecond filamentation regime. Scientific Reports, 11(1), 14270 (10 pages). https://doi.org/10.1038/s41598-021-93683-x

Statistics

Total downloads

Downloads per month in the last year

Origin of downloads

Dimensions

Repository Staff Only

View Item View Item