Controlling the pulse width by the sample’s second-order dispersion to study its instantaneous and non-instantaneous nonlinear refractions

R. M. Moysés; E. C. Barbano; L. Misoguti

doi:10.1117/12.3002494

12 March 2024 Controlling the pulse width by the sample’s second-order dispersion to study its instantaneous and non-instantaneous nonlinear refractions

R. M. Moysés, E. C. Barbano, L. Misoguti

Author Affiliations +

Proceedings Volume 12875, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIV; 128750A (2024) https://doi.org/10.1117/12.3002494
Event: SPIE LASE, 2024, San Francisco, California, United States

Abstract

Recently, we developed a simple, sensitive, and single-beam method for measuring the local nonlinear refraction using a tightly focused laser beam and the Nonlinear Ellipse Rotation (NER) signal. Such configuration allows mapping the nonlinear refraction as a function of depth. The NER signal for pure instantaneous nonlinearity is inversely proportional to the pulse width, which can be shortened or lengthened depending on the sign of the sample’s dispersion and the input pulse chirp and pulse propagation length. However, in materials exhibiting non-instantaneous molecular orientation effects, such as liquids, we have to take into account the effective nonlinear refraction. Hence, here we propose to perform NER measurements in thick and highly dispersive samples, with instantaneous and non-instantaneous refractive nonlinearities, to obtain both the pulse and sample’s parameters, including the nonlinear refraction as a function of the pulse width.

Conference Presentation

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

R. M. Moysés, E. C. Barbano, and L. Misoguti "Controlling the pulse width by the sample’s second-order dispersion to study its instantaneous and non-instantaneous nonlinear refractions", Proc. SPIE 12875, Frontiers in Ultrafast Optics: Biomedical, Scientific, and Industrial Applications XXIV, 128750A (12 March 2024); https://doi.org/10.1117/12.3002494

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available