The conversion of a femtosecond pulse with a central wavelength of 950 nm to the second harmonic

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

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The results of theoretical and experimental studies of the second harmonic generation in a Ti:Sapphire femtosecond complex are described. The complex includes a femtosecond pulse generator, a stretcher, a regenerative amplifier, two multipass amplifiers, a compressor, and a second-harmonic generator. The effects of the radiation intensity, beam spatial profile, and the level of the noise component of the first harmonic at a wavelength of 950 nm on the homogeneity of the second harmonic are studied. It is theoretically shown that a good homogeneity of the second harmonic intensity is observed in the absence of the noise component in the beam at the fundamental wavelength. When making the amplitude inhomogeneities in the first harmonic even greater, inhomogeneities in the second harmonic appear. It is experimentally shown that an increase in the noise component in a pumping beam due to the use of a spatial filter allows strong suppression of small-scale inhomogeneities in the second harmonic.

Original languageEnglish
Pages (from-to)365-370
Number of pages6
JournalAtmospheric and Oceanic Optics
Volume29
Issue number4
DOIs
Publication statusPublished - 1 Jul 2016

Fingerprint

inhomogeneity
wavelength
harmonics
homogeneity
pulses
wavelengths
sapphire
theoretical study
pumping
experimental study
amplifiers
harmonic generators
filter
pulse generators
compressors
radiant flux density
harmonic generations
retarding
filters
profiles

Keywords

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

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Atmospheric Science
  • Earth-Surface Processes
  • Oceanography

Cite this

The conversion of a femtosecond pulse with a central wavelength of 950 nm to the second harmonic. / Alekseev, S. V.; Ivanov, N. G.; Losev, V. F.; Mironov, S. Yu.

In: Atmospheric and Oceanic Optics, Vol. 29, No. 4, 01.07.2016, p. 365-370.

Research output: Contribution to journalArticle

Alekseev, S. V. ; Ivanov, N. G. ; Losev, V. F. ; Mironov, S. Yu. / The conversion of a femtosecond pulse with a central wavelength of 950 nm to the second harmonic. In: Atmospheric and Oceanic Optics. 2016 ; Vol. 29, No. 4. pp. 365-370.
@article{885179c6946d4ea8b92ac7d1d158b767,
title = "The conversion of a femtosecond pulse with a central wavelength of 950 nm to the second harmonic",
abstract = "The results of theoretical and experimental studies of the second harmonic generation in a Ti:Sapphire femtosecond complex are described. The complex includes a femtosecond pulse generator, a stretcher, a regenerative amplifier, two multipass amplifiers, a compressor, and a second-harmonic generator. The effects of the radiation intensity, beam spatial profile, and the level of the noise component of the first harmonic at a wavelength of 950 nm on the homogeneity of the second harmonic are studied. It is theoretically shown that a good homogeneity of the second harmonic intensity is observed in the absence of the noise component in the beam at the fundamental wavelength. When making the amplitude inhomogeneities in the first harmonic even greater, inhomogeneities in the second harmonic appear. It is experimentally shown that an increase in the noise component in a pumping beam due to the use of a spatial filter allows strong suppression of small-scale inhomogeneities in the second harmonic.",
keywords = "femtosecond laser pulse, Gaussian beam, homogeneity, inhomogeneity, intensity, nonlinear crystal, second harmonic generation",
author = "Alekseev, {S. V.} and Ivanov, {N. G.} and Losev, {V. F.} and Mironov, {S. Yu}",
year = "2016",
month = "7",
day = "1",
doi = "10.1134/S1024856016040023",
language = "English",
volume = "29",
pages = "365--370",
journal = "Atmospheric and Oceanic Optics",
issn = "1024-8560",
publisher = "Springer Science + Business Media",
number = "4",

}

TY - JOUR

T1 - The conversion of a femtosecond pulse with a central wavelength of 950 nm to the second harmonic

AU - Alekseev, S. V.

AU - Ivanov, N. G.

AU - Losev, V. F.

AU - Mironov, S. Yu

PY - 2016/7/1

Y1 - 2016/7/1

N2 - The results of theoretical and experimental studies of the second harmonic generation in a Ti:Sapphire femtosecond complex are described. The complex includes a femtosecond pulse generator, a stretcher, a regenerative amplifier, two multipass amplifiers, a compressor, and a second-harmonic generator. The effects of the radiation intensity, beam spatial profile, and the level of the noise component of the first harmonic at a wavelength of 950 nm on the homogeneity of the second harmonic are studied. It is theoretically shown that a good homogeneity of the second harmonic intensity is observed in the absence of the noise component in the beam at the fundamental wavelength. When making the amplitude inhomogeneities in the first harmonic even greater, inhomogeneities in the second harmonic appear. It is experimentally shown that an increase in the noise component in a pumping beam due to the use of a spatial filter allows strong suppression of small-scale inhomogeneities in the second harmonic.

AB - The results of theoretical and experimental studies of the second harmonic generation in a Ti:Sapphire femtosecond complex are described. The complex includes a femtosecond pulse generator, a stretcher, a regenerative amplifier, two multipass amplifiers, a compressor, and a second-harmonic generator. The effects of the radiation intensity, beam spatial profile, and the level of the noise component of the first harmonic at a wavelength of 950 nm on the homogeneity of the second harmonic are studied. It is theoretically shown that a good homogeneity of the second harmonic intensity is observed in the absence of the noise component in the beam at the fundamental wavelength. When making the amplitude inhomogeneities in the first harmonic even greater, inhomogeneities in the second harmonic appear. It is experimentally shown that an increase in the noise component in a pumping beam due to the use of a spatial filter allows strong suppression of small-scale inhomogeneities in the second harmonic.

KW - femtosecond laser pulse

KW - Gaussian beam

KW - homogeneity

KW - inhomogeneity

KW - intensity

KW - nonlinear crystal

KW - second harmonic generation

UR - http://www.scopus.com/inward/record.url?scp=84983514185&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84983514185&partnerID=8YFLogxK

U2 - 10.1134/S1024856016040023

DO - 10.1134/S1024856016040023

M3 - Article

VL - 29

SP - 365

EP - 370

JO - Atmospheric and Oceanic Optics

JF - Atmospheric and Oceanic Optics

SN - 1024-8560

IS - 4

ER -