Phase conjugation ultraviolet laser beam by four-wave mixing

1996 ◽  
Author(s):  
Michail G. Galushkin ◽  
K. V. Mitin ◽  
Konstantin N. Sviridov
Keyword(s):  
Laser Beam ◽  
Phase Conjugation ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Ultraviolet Laser

Doppler-Free Spectroscopy Based on Phase Conjugation by Degenerate Four-Wave Mixing in Hollow Cathode Discharge

1987 ◽  
Vol 41 (4) ◽  
pp. 586-590 ◽  
Author(s):  
William G. Tong ◽  
Dennis A. Chen
Keyword(s):  
Laser Beam ◽  
Signal Detection ◽  
Spectral Resolution ◽  
Hollow Cathode ◽  
Phase Conjugation ◽  
Four Wave Mixing ◽  
Signal Beam ◽  
Hollow Cathode Discharge ◽  
Wave Mixing ◽  
Optical Phase Conjugation

Optical phase conjugation in the hollow cathode lamp by degnerate four-wave mixing is a novel analytical laser spectroscopic method in which a laser beam is generated as the signal beam. With the use of a demountable hollow cathode discharge cell and a continuous-wave dye laser, the signal beam is clearly visible to the naked eye when 1 µg of sodium is placed inside the cathode cavity. Since the signal beam is a time-reversed replica of the probe laser beam, highly efficient optical signal detection can be performed with minimum optical background noise. Since the signal is Doppler-free with negligible Lorentzian broadening (30 Torr discharge pressure), it provides excellent spectral resolution. Sodium D2 hyperfine lines of 3s 2S1/2 ( F' = 2) → 3p 2P3/2 ( F = 3) and 3s 2S1/2 ( F' = 1) → 3p 2P3/2 ( F = 0) were resolved. In addition to excellent spectral resolution and ease of signal detection, the technique also offers unique properties of optical phase conjugation.

Quantum theory of noise in phase conjugation by four-wave mixing in a two-level system

1997 ◽  
Vol 55 (4) ◽  
pp. 3155-3163 ◽  
Author(s):  
R. W. Schirmer ◽  
M. Y. Lanzerotti ◽  
A. L. Gaeta ◽  
G. S. Agarwal
Keyword(s):  
Quantum Theory ◽  
Phase Conjugation ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Level System

Fidelity of optical phase conjugation by degenerate four‐wave mixing in semiconductor glasses and ruby

1989 ◽  
Vol 54 (19) ◽  
pp. 1842-1844 ◽  
Author(s):  
S. M. Saltiel ◽  
B. Van Wonterghem ◽  
D. A. Parthenopoulos ◽  
T. E. Dutton ◽  
P. M. Rentzepis
Keyword(s):  
Phase Conjugation ◽  
Four Wave Mixing ◽  
Wave Mixing ◽  
Optical Phase Conjugation ◽  
Optical Phase ◽  
Degenerate Four Wave Mixing ◽  
Semiconductor Glasses

Resonant electromagnetic wave mixing in a dusty plasma

1996 ◽  
Vol 55 (3) ◽  
pp. 349-358 ◽  
Author(s):  
Jin-Xiu Ma ◽  
M. Y. Yu ◽  
P. K. Shukla
Keyword(s):  
Acoustic Waves ◽  
Electromagnetic Waves ◽  
Phase Conjugation ◽  
Four Wave Mixing ◽  
Dusty Plasmas ◽  
Wave Mixing ◽  
Ion Acoustic Waves ◽  
Charge Fluctuations ◽  
Dust Charge ◽  
Dust Charge Fluctuations

Wave mixing resulting from the resonance of electromagnetic waves with ion acoustic waves modified by dust charge fluctuations is investigated. The corresponding nonlinear susceptibilities are derived and applied to the study of phase conjugation by four-wave mixing. It is shown that dust charge fluctuations can lead to a filling-up of the resonance-induced splitting of the phase-conjugate reflectivity, making the latter a useful tool for the diagnostics of dusty plasmas.

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