Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optics Letters

Resonantly enhanced second-harmonic generation in zinc vapor

W. Jamroz, Paul E. LaRocque, Boris Peter Stoicheff

Published Apr 1, 1982• 36 citations
Publisher

Abstract

Coherent second-harmonic radiation has been generated in atomic zinc vapor at 1792.5 and 1601 A from the 5(1)S(0)and 4(1)D(2) states, respectively, by two-photon resonance enhancement. Measurements of the ratio of second-to third-harmonic generation suggest the occurrence of static electric fields of ~5 kV/cm. These fields are caused by ionization of ~2% of the atoms in the focal volume of the incident laser beam.

DOI
10.1364/ol.7.000148

Related papers

Two-photon resonant second-harmonic generation from rubidium rydberg atoms

S. S. Vianna, J. W. R. Tabosa, F. A. M. de Oliveira

Abstract Second harmonic generation from Rydberg states in rubidium vapor is studied in the absence of a buffer gas and external symmetry breaking dc fields. Measurements of polarization dependence and spatial beam profile show that a laser-induced static-electric-field provides one of the dominatant mechanisms to create the coherent second harmonic beam.

European Quantum Electronics Conference (EQEC)•Aug 24, 2005•0 citations

Spontaneous-Field-Induced Optical Second-Harmonic Generation in Atomic Vapors

Kenzo Miyazaki, Takuzo Sato, Hiroshi Kashiwagi

It is shown that optical second-harmonic generation is possible in dispersive atomic vapors since a static electric field is spontaneously created by the fundamental laser beam. When multiphoton ionization of atoms occurs simultaneously in the interaction, the spontaneous field and second-harmonic generation are significantly enhanced. Our experimental results for atomic sodium vapor irradiated by picosecond Nd-doped yttrium-aluminum-garnet laser pulses agree well with the theoretical predictions.

Physical Review Letters•Oct 15, 1979•45 citations

Nonresonant third harmonic generation and the parametric process in Zn vapor

Shuo-Yan Zhao, Peilin Zhang, Guangzhi Zhang +1 more

Nonresonant third harmonic generation with tuning range between 157.0-158.8 nm and 210.4-214.0 nm in zinc vapor is reported. Using two-photon excitation of Zn 4s4d(1)D(2), 4s6s(1)S(0), and 4s6d(1)D(2) states, parametric processes with signal waves 213.8 nm, 159.0 nm, and 145.8 nm are also investigated.

Applied Optics•Nov 1, 1989•2 citations

Second-harmonic generation at Lyman-α in atomic hydrogen

L. Marmet, K. Hakuta, Boris Peter Stoicheff

Second-harmonic generation in atomic hydrogen is investigated with and without an applied electric field, by tuning laser radiation at 243.1 nm through the 2 (2)S((1/2))-1(2)S((1/2)) two-photon resonance. Even at zero applied field, secondharmonic radiation at 121.6 nm was observed. The measured intensity is shown to arise from a charge-separation field caused by ions produced in three-photon ionization. calculated value based on the measured ion density.

Optics Letters•Feb 15, 1991•7 citations

Picosecond Studies of Optical Second Harmonic Generation in Atomic Vapor

Christopher S. Mullin, Doseok Kim, Marla B. Feller +1 more

Picosecond laser pulses are used to study the forbidden resonant second harmonic generation (SHG) in atomic vapor. The results can be understood quantitatively by an ionization-initiated dc-field-induced SHG model taking into account the temporal buildup of the dc field and transient behavior of the two-photon coherent excitation of the vapor.

Physical Review Letters•Apr 3, 1995•9 citations

Second-harmonic generation in atomic vapor with picosecond laser pulses

Doseok Kim, Christopher S. Mullin, Y. Ron Shen

Picosecond laser pulses were used to study the highly forbidden resonant second-harmonic generation (SHG) in potassium vapor. The input intensity dependence, vapor density dependence, buffer-gas pressure dependence, and spatial profile of the SHG were measured. A pump–probe experiment was conducted to probe the time dependence of the SHG signal. The experimental results can be understood from an ionization-initiated dc-field-induced SHG model. A theory of a dc-field-induced SHG model is developed that takes into account the time development of the dc electric field in detail. This temporal buildup of the dc field along with transient coherent excitation between two-photon-allowed transitions can explain the experimental results quantitatively, including the previous vapor SHG results with nanosecond laser pulses.

Journal of the Optical Society of America B•Oct 1, 1997•8 citations
Coherent second-harmonic radiation has been generated in atomic zinc vapor at 1792.5 and 1601 A from the 5(1)S(0)and 4(1)D(2) states, respectively, by two-photon resonance enhancement. Measurements of the ratio of second-to third-harmonic generation suggest the occurrence of static electric fields of ~5 kV/cm. These fields are caused by ionization of ~2% of the atoms in the focal volume of the incident laser beam.
It is shown that optical second-harmonic generation is possible in dispersive atomic vapors since a static electric field is spontaneously created by the fundamental laser beam. When multiphoton ionization of atoms occurs simultaneously in the interaction, the spontaneous field and second-harmonic generation are significantly enhanced. Our experimental results for atomic sodium vapor irradiated by picosecond Nd-doped yttrium-aluminum-garnet laser pulses agree well with the theoretical predictions.
Picosecond laser pulses were used to study the highly forbidden resonant second-harmonic generation (SHG) in potassium vapor. The input intensity dependence, vapor density dependence, buffer-gas pressure dependence, and spatial profile of the SHG were measured. A pump–probe experiment was conducted to probe the time dependence of the SHG signal. The experimental results can be understood from an ionization-initiated dc-field-induced SHG model. A theory of a dc-field-induced SHG model is developed that takes into account the time development of the dc electric field in detail. This temporal buildup of the dc field along with transient coherent excitation between two-photon-allowed transitions can explain the experimental results quantitatively, including the previous vapor SHG results with nanosecond laser pulses.