Picosecond phase-conjugation by degenerate four-wave mixing in sodium vapour

A. C. Cefalas, T. Mikropoulos, P. Simon, J. Hebling, C. A. Nicolaides

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Phase-conjugated waves (PCW), via degenerate four-wave mixing (DFWM) with picosecond laser pulses having a FWHM of 80 ps have been obtained in sodium vapour on both sides of the D2(32S1/2→32P3/2) transition at 589 nm. The maximum reflectivity of the PCW signals was 60%. The reflectivity of the PCW has been measured as a function of the temperature, the detuning and the pump and probe intensities. Because of the very strong nonlinear behaviour of the D2 transition the appearance of the PCW is accompanied by strong self-focusing and defocusing of the beams, which give a rather complicated line-shape of the detuning curve of the PCW. By varying the delay between the beams, the lifetime of the transient volume grating has been, measured to be 7.4 ns. The results are in qualitative agreement with the theoretical model of Abrams and Lind.

Original languageEnglish
Pages (from-to)363-367
Number of pages5
JournalApplied Physics B Photophysics and Laser Chemistry
Volume46
Issue number4
DOIs
Publication statusPublished - Aug 1988

Fingerprint

sodium vapor
phase conjugation
Four wave mixing
four-wave mixing
Vapors
Sodium
reflectance
defocusing
self focusing
Full width at half maximum
line shape
Laser pulses
Pumps
gratings
pumps
life (durability)
probes
curves
pulses
lasers

Keywords

  • 42.60kg
  • 42.65k

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)
  • Engineering(all)

Cite this

Picosecond phase-conjugation by degenerate four-wave mixing in sodium vapour. / Cefalas, A. C.; Mikropoulos, T.; Simon, P.; Hebling, J.; Nicolaides, C. A.

In: Applied Physics B Photophysics and Laser Chemistry, Vol. 46, No. 4, 08.1988, p. 363-367.

Research output: Contribution to journalArticle

Cefalas, A. C. ; Mikropoulos, T. ; Simon, P. ; Hebling, J. ; Nicolaides, C. A. / Picosecond phase-conjugation by degenerate four-wave mixing in sodium vapour. In: Applied Physics B Photophysics and Laser Chemistry. 1988 ; Vol. 46, No. 4. pp. 363-367.
@article{0a169b88ee9042278e48682db115d69a,
title = "Picosecond phase-conjugation by degenerate four-wave mixing in sodium vapour",
abstract = "Phase-conjugated waves (PCW), via degenerate four-wave mixing (DFWM) with picosecond laser pulses having a FWHM of 80 ps have been obtained in sodium vapour on both sides of the D2(32S1/2→32P3/2) transition at 589 nm. The maximum reflectivity of the PCW signals was 60{\%}. The reflectivity of the PCW has been measured as a function of the temperature, the detuning and the pump and probe intensities. Because of the very strong nonlinear behaviour of the D2 transition the appearance of the PCW is accompanied by strong self-focusing and defocusing of the beams, which give a rather complicated line-shape of the detuning curve of the PCW. By varying the delay between the beams, the lifetime of the transient volume grating has been, measured to be 7.4 ns. The results are in qualitative agreement with the theoretical model of Abrams and Lind.",
keywords = "42.60kg, 42.65k",
author = "Cefalas, {A. C.} and T. Mikropoulos and P. Simon and J. Hebling and Nicolaides, {C. A.}",
year = "1988",
month = "8",
doi = "10.1007/BF00686460",
language = "English",
volume = "46",
pages = "363--367",
journal = "Applied Physics B: Photophysics and Laser Chemistry",
issn = "0721-7269",
publisher = "Springer Verlag",
number = "4",

}

TY - JOUR

T1 - Picosecond phase-conjugation by degenerate four-wave mixing in sodium vapour

AU - Cefalas, A. C.

AU - Mikropoulos, T.

AU - Simon, P.

AU - Hebling, J.

AU - Nicolaides, C. A.

PY - 1988/8

Y1 - 1988/8

N2 - Phase-conjugated waves (PCW), via degenerate four-wave mixing (DFWM) with picosecond laser pulses having a FWHM of 80 ps have been obtained in sodium vapour on both sides of the D2(32S1/2→32P3/2) transition at 589 nm. The maximum reflectivity of the PCW signals was 60%. The reflectivity of the PCW has been measured as a function of the temperature, the detuning and the pump and probe intensities. Because of the very strong nonlinear behaviour of the D2 transition the appearance of the PCW is accompanied by strong self-focusing and defocusing of the beams, which give a rather complicated line-shape of the detuning curve of the PCW. By varying the delay between the beams, the lifetime of the transient volume grating has been, measured to be 7.4 ns. The results are in qualitative agreement with the theoretical model of Abrams and Lind.

AB - Phase-conjugated waves (PCW), via degenerate four-wave mixing (DFWM) with picosecond laser pulses having a FWHM of 80 ps have been obtained in sodium vapour on both sides of the D2(32S1/2→32P3/2) transition at 589 nm. The maximum reflectivity of the PCW signals was 60%. The reflectivity of the PCW has been measured as a function of the temperature, the detuning and the pump and probe intensities. Because of the very strong nonlinear behaviour of the D2 transition the appearance of the PCW is accompanied by strong self-focusing and defocusing of the beams, which give a rather complicated line-shape of the detuning curve of the PCW. By varying the delay between the beams, the lifetime of the transient volume grating has been, measured to be 7.4 ns. The results are in qualitative agreement with the theoretical model of Abrams and Lind.

KW - 42.60kg

KW - 42.65k

UR - http://www.scopus.com/inward/record.url?scp=0024066035&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0024066035&partnerID=8YFLogxK

U2 - 10.1007/BF00686460

DO - 10.1007/BF00686460

M3 - Article

AN - SCOPUS:0024066035

VL - 46

SP - 363

EP - 367

JO - Applied Physics B: Photophysics and Laser Chemistry

JF - Applied Physics B: Photophysics and Laser Chemistry

SN - 0721-7269

IS - 4

ER -