Single-beam technique for ultrashort pulse characterization based on the nonlinear ellipse rotation signal

Author(s)

Moyses, R. M. ; Barbano, E. C. ; Misoguti, L.

• Document type: Journal article
• Source: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS; v. 40, n. 6, p. 7-pg., 2023-06-01.

Abstract

We present a single-beam method based on the third-order nonlinear-ellipse-rotation (NER) measurement in thick samples to determine the pulse properties, including the duration and linear chirp. Our approach exploits the influence of the intrinsic second-order dispersions of the nonlinear materials, which affect the NER signal as a func-tion of propagation. Two advantages can be highlighted: no delay line is required, and there are no phase-matching issues. To test our method, we characterized ultrafast chirped pulses from a Ti:sapphire amplified laser system and tunable pulses from an optical parametric amplifier using two samples with high dispersions and nonlinearities: SF6 and LaSF-N30 optical glasses. & COPY; 2023 Optica Publishing Group (AU)

• FAPESP's process: 19/00638-1 - Study of the zincblende polycrystalline semiconductors nonlinearities: spectral and spatial dependences
• Grantee: Lino Misoguti
• Support Opportunities: Regular Research Grants
• FAPESP's process: 18/11283-7 - Nonlinear photonics: spectroscopy and advanced processing of materials
• Grantee: Cleber Renato Mendonça
• Support Opportunities: Research Projects - Thematic Grants