Interference of radiation at fundamental and tripled frequencies with superbroadening of the few-cycle pulse spectrum in nonlinear media

In media with cubic nonlinearity, broadening of the optical pulses' spectrum is observed due to their phase modulation and generation of radiation at triple frequencies. When the number of oscillations in the original pulse is small, these spectra may overlap, resulting in unconventional phenom...

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Bibliographic Details
Main Authors: Kozlov, S.A., Artser, I.R., Melnik, M.V., Tsypkin, A.N.
Format: Conference Proceeding
Language:English
Subjects:
few-cycle pulses
Frequency modulation
Laser theory
Media
Optical attenuators
Optical modulation
Phase modulation
self-phase modulation phenomenon
Stimulated emission
third harmonics generation
THz radiation
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Description
Summary:In media with cubic nonlinearity, broadening of the optical pulses' spectrum is observed due to their phase modulation and generation of radiation at triple frequencies. When the number of oscillations in the original pulse is small, these spectra may overlap, resulting in unconventional phenomena for traditional nonlinear optics such as mutual amplification or attenuation effects of phase modulation and generation of radiation at triple frequencies, which are nonuniform across the spectrum. The report discusses the theory of these phenomena and presents the results of their experimental observations in the terahertz spectral range.
ISSN:2642-5580
DOI:10.1109/ICLO59702.2024.10624287