| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Sao Paulo, Inst Fis Sao Carlos, Caixa Postal 369, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Fed Uberlandia, Ave Joao Naves Avila 2121, BR-38400902 Uberlandia, MG - Brazil
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS; v. 34, n. 10, p. 2233-2237, OCT 1 2017. |
| Web of Science Citations: | 1 |
| Abstract | |
Nonlinear refractive indices of air and its constituents were measured as a function of the pulse width in a capillary used to confine the gas and to increase the interaction length. This study was carried out with nonlinear ellipse rotation measurements using an amplified Ti:sapphire laser system providing pulses at 800 nm, continuously tunable from similar to 60 fs up to similar to 3 ps. Due to the presence of noninstantaneous orientational response, nonlinearities in molecular gases strongly depend on the pulse width. The pulse width dependence and discrimination between instantaneous and noninstantaneous nonlinearities of air gases were obtained with a simple exponential growth model. (C) 2017 Optical Society of America (AU) | |
| FAPESP's process: | 11/12399-0 - Femtosecond pulses applied to nonlinear optics: spectroscopy, pulse shaping and microfabrication |
| Grantee: | Cleber Renato Mendonça |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 13/23999-3 - Measurements of refractive nonlinearity of gases by nonlinear elliptical polarization rotation method |
| Grantee: | Lino Misoguti |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 16/20828-1 - Implementation of an optical microscope based on SPIFI technique |
| Grantee: | Emerson Cristiano Barbano |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |