The study of second harmonic generation of the femtosecond laser pulses with a 950nm central wavelength

S. V. Alekseev, N. G. Ivanov, V. F. Losev, S. Y. Mironov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

The paper presents the results of theoretical and experimental studies of the second harmonic generation process in the Ti:sapphire femtosecond complex, which includes a generator of the femtosecond pulse, stretcher, regenerative amplifier, two multi-pass amplifiers, compressor and second-harmonic generator. This complex provides the 50-fs pulses with energy of 20 mJ and it is used as a master oscillator in THL-100 hybrid laser system, which operates in the visible region at a wavelength of 475 nm. Experiments and calculations for various beam parameters of the fundamental harmonic, such as radiation intensity, spatial profile of the beam and the level of the noise component were performed. It is theoretically shown that in the absence of the noise component in the beam of the fundamental wave a good uniformity of the second harmonic should be observed. When making the amplitude heterogeneities in the first harmonic even greater heterogeneities in the second harmonic are appeared. It is experimentally shown that with increasing of energy beam the inhomogeneity of the second harmonic beam increases.

Original languageEnglish
Title of host publicationInternational Conference on Atomic and Molecular Pulsed Lasers XII
PublisherSPIE
Volume9810
ISBN (Electronic)9781510600515
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventInternational Conference on Atomic and Molecular Pulsed Lasers XII - Tomsk, Russian Federation
Duration: 13 Sep 201518 Sep 2015

Conference

ConferenceInternational Conference on Atomic and Molecular Pulsed Lasers XII
CountryRussian Federation
CityTomsk
Period13.9.1518.9.15

Keywords

  • femtosecond laser pulse
  • Gaussian beam
  • heterogeneity
  • homogeneity
  • intensity
  • nonlinear crystal
  • second harmonic generation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Alekseev, S. V., Ivanov, N. G., Losev, V. F., & Mironov, S. Y. (2015). The study of second harmonic generation of the femtosecond laser pulses with a 950nm central wavelength. In International Conference on Atomic and Molecular Pulsed Lasers XII (Vol. 9810). [98100P] SPIE. https://doi.org/10.1117/12.2225421