Nonlinear and Quantum Optics on the Nature of Sugar Emission Excited by the First Harmonic of a Nd Laser

V. I. Oleshko, V. P. Tzipilev, A. N. Yakovlev, G. V. Murastov, N. A. Alekseev

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The physical nature of emissions excited in pressed-sugar samples by the first harmonic of a neodymium laser (1064 nm, 12 ns) is studied. The spectral, kinetic, spatial, and amplitude characteristics of emissions upon single- and multipulse irradiation with energy densities of 0.012–3.2 J/cm2 are measured. It is found that excitation of a sample by the first pulse causes two emission types, namely, emission of the second harmonic of a Nd laser (532 nm) and glowing of dense low-temperature plasma formed as a result of a low-temperature optical breakdown on absorbing inhomogeneities. Multipulse excitation leads to annealing of absorbing inhomogeneities and to an increase in the optical breakdown threshold.

Original languageEnglish
Pages (from-to)834-837
Number of pages4
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume124
Issue number6
DOIs
Publication statusPublished - 1 Jun 2018

Fingerprint

Quantum optics
Nonlinear optics
quantum optics
nonlinear optics
sugars
Sugars
Neodymium lasers
harmonics
Lasers
lasers
inhomogeneity
breakdown
Irradiation
Annealing
neodymium lasers
Plasmas
Temperature
Kinetics
dense plasmas
cold plasmas

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

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abstract = "The physical nature of emissions excited in pressed-sugar samples by the first harmonic of a neodymium laser (1064 nm, 12 ns) is studied. The spectral, kinetic, spatial, and amplitude characteristics of emissions upon single- and multipulse irradiation with energy densities of 0.012–3.2 J/cm2 are measured. It is found that excitation of a sample by the first pulse causes two emission types, namely, emission of the second harmonic of a Nd laser (532 nm) and glowing of dense low-temperature plasma formed as a result of a low-temperature optical breakdown on absorbing inhomogeneities. Multipulse excitation leads to annealing of absorbing inhomogeneities and to an increase in the optical breakdown threshold.",
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T1 - Nonlinear and Quantum Optics on the Nature of Sugar Emission Excited by the First Harmonic of a Nd Laser

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AU - Tzipilev, V. P.

AU - Yakovlev, A. N.

AU - Murastov, G. V.

AU - Alekseev, N. A.

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