Effects of random phase distortion and nonlinear optical processes on laser beam uniformity and spatial incoherence (ISI)

1993 ◽  
Author(s):  
Robert H. Lehmberg ◽  
Stephen P. Obenschain ◽  
Carl J. Pawley ◽  
Mark S. Pronko ◽  
A. V. Deniz ◽  
...  
Keyword(s):  
Laser Beam ◽  
Nonlinear Optical ◽  
Random Phase ◽  
Phase Distortion

Probing of a random phase object by a focused spatially modulated laser beam. Integral scanning method

1999 ◽  
Vol 25 (12) ◽  
pp. 971-973 ◽  
Author(s):  
V. P. Ryabukho ◽  
A. A. Chausskii ◽  
A. E. Grinevich
Keyword(s):  
Laser Beam ◽  
Random Phase ◽  
Phase Object ◽  
Scanning Method

Laser beam directors with nonlinear optical correction

1999 ◽  
Author(s):  
Vladimir Y. Venediktov ◽  
Alexey Leshchev ◽  
Michael V. Vasil'ev
Keyword(s):  
Laser Beam ◽  
Nonlinear Optical ◽  
Optical Correction

Phase distortion in a propulsive laser beam due to aero-optical phenomena

1990 ◽  
Vol 6 (4) ◽  
pp. 416-425 ◽  
Author(s):  
Marco A. S. Minucci ◽  
Leik N. Myrabo
Keyword(s):  
Laser Beam ◽  
Phase Distortion ◽  
Optical Phenomena

Laser beam directors with nonlinear optical correction

1998 ◽  
Author(s):  
Vladimir Y. Venediktov ◽  
Alexey Leshchev ◽  
Michael V. Vasil'ev
Keyword(s):  
Laser Beam ◽  
Nonlinear Optical ◽  
Optical Correction

Laser-beam apodization with a graded random phase window: erratum

1987 ◽  
Vol 12 (3) ◽  
pp. 223 ◽  
Author(s):  
Roger A. Haas ◽  
Mark A. Summers ◽  
Gary J. Linford
Keyword(s):  
Laser Beam ◽  
Random Phase

A Theoretical Study of the Refractive Index of KDP Crystal Doped with TiO2 Nanoparticles

2017 ◽  
pp. 524-534
Author(s):  
Volodymyr Krasnoholovets
Keyword(s):  
Laser Beam ◽  
Tio2 Nanoparticles ◽  
Nonlinear Optical ◽  
Ferroelectric Phase ◽  
Picosecond Laser ◽  
Laser Pulses ◽  
Optical Response ◽  
Local Area ◽  
Nonlinear Susceptibility ◽  
Non Linear

In the present chapter we study a nonlinear response of an optical matrix formed by the K2HPO4 crystal doped with TiO2 nanoparticles. Such doped matrix is a nonlinear optical system that is characterized by the cubic non-linear optical response at picosecond laser pulses. Laser pulses release photoelectrons from nanoparticles, which emerge as free carriers on the nanoparticles' surface generating an electric field in local area of the K2HPO4 matrix, which results in the phase transition from the paraphase to the ferroelectric phase state. The appeared ferroelectric phase induces a large polarization around TiO2 nanoparticles, which in turn immediately produces a nonlinear optical response to the laser pulse of the inverse sign, such that the laser beam becomes more focused. The gigantic non-linear susceptibility ??(3) responsible for the phenomenon of focusing of the laser beam is calculated by using the pseudospin model for the description of ferroelectric crystals and the expressions for nonlinear-susceptibility tensor components computed by other researchers.

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