Effects of multi-pump beam coupling on intensity enhancement of a probe beam in photorefractive two-wave mixing

1990 ◽  
Vol 3 (6) ◽  
pp. 217-221 ◽  
Author(s):  
G. C. Gilbreath ◽  
F. M. Davidson
Keyword(s):  
Probe Beam ◽  
Pump Beam ◽  
Wave Mixing ◽  
Intensity Enhancement ◽  
Beam Coupling ◽  
Two Wave Mixing

BEAM COUPLING CHARACTERISTICS IN NEMATIC LIQUID CRYSTAL DOPED WITH SILVER NANOPARTICLES

2008 ◽  
Vol 17 (04) ◽  
pp. 377-385 ◽  
Author(s):  
YONG-YUAN JIANG ◽  
JING LI ◽  
LIN-YI HUANG
Keyword(s):  
Image Processing ◽  
Silver Nanoparticles ◽  
Photorefractive Effect ◽  
The Self ◽  
Wave Mixing ◽  
Signal Ratio ◽  
Beam Coupling ◽  
Two Wave Mixing ◽  
Pump Signal ◽  
Coupling Characteristics

The orientational photorefractive effect was observed in the nematic liquid crystals E7 doped with silver nanoparticles. Both the self-diffraction and beam-coupling effects were studied in a two-wave-mixing experiment with an applied external DC field. The dependence of diffraction efficiency on the applied voltage, pump power, pump/signal ratio and grating constant were studied. Experimental results indicate that the optical non-linearity of NLCs can be enhanced significantly by doping silver nanoparticles. Further experiments demonstrate that the holographic grating formed in the sample can be switched on and off by the external DC field. PR two-beam coupling experiment was also performed in the Ag-doped NLCs cell. These results are of benefit to the applications of PR NLCs in holography and image processing.

On the two-wave mixing in BaTiO 3 with a self-bent pump beam

1998 ◽  
Vol 66 (2) ◽  
pp. 197-199 ◽  
Author(s):  
M.B. Danailov ◽  
D.J. Biswas
Keyword(s):  
Pump Beam ◽  
Wave Mixing ◽  
Two Wave Mixing

Very high-gain two-wave mixing in BaTiO_3 with a self-bent pump beam

1995 ◽  
Vol 20 (16) ◽  
pp. 1689 ◽  
Author(s):  
A. Brignon ◽  
S. Breugnot ◽  
J.-P. Huignard
Keyword(s):  
Pump Beam ◽  
High Gain ◽  
Wave Mixing ◽  
Two Wave Mixing ◽  
Very High

Enhancement of photo-refractive two-wave mixing gain with a Bessel pump beam

2003 ◽  
Vol 226 (1-6) ◽  
pp. 387-391 ◽  
Author(s):  
Dhruba J. Biswas ◽  
J. Padma Nilaya ◽  
Miltcho B. Danailov
Keyword(s):  
Pump Beam ◽  
Wave Mixing ◽  
Two Wave Mixing

Enhancement of the signal-to-background ratio in photorefractive two-wave mixing by mutually incoherent two-beam coupling

1994 ◽  
Vol 19 (14) ◽  
pp. 1070 ◽  
Author(s):  
S. Breugnot ◽  
M. Defour ◽  
D. Dolfi ◽  
H. Rajbenbach ◽  
J.-P. Huignard
Keyword(s):  
Wave Mixing ◽  
Background Ratio ◽  
Beam Coupling ◽  
Two Wave Mixing
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