Experimental demonstration of an intensity minimum at the focus of a laser beam created by spatial coherence

2011 ◽  
Author(s):  
Shreyas B. Raghunathan ◽  
Thomas van Dijk ◽  
Erwin Peterman ◽  
Taco D. Visser
Keyword(s):  
Laser Beam ◽  
Spatial Coherence ◽  
Experimental Demonstration

Spatial coherence of a ruby laser beam by interferometry

1978 ◽  
Vol 17 (21) ◽  
pp. 3500 ◽  
Author(s):  
H. Madjidi-Zolbanine
Keyword(s):  
Laser Beam ◽  
Ruby Laser ◽  
Spatial Coherence

On the measurement of the complex spatial coherence of a He-Ne laser beam

1966 ◽  
Vol 42 (1) ◽  
pp. 108-120 ◽  
Author(s):  
J. V. Cornacchio ◽  
K. A. Farnham
Keyword(s):  
Laser Beam ◽  
Spatial Coherence

On the measurement of the spatial coherence of a laser beam

1964 ◽  
Vol 33 (6) ◽  
pp. 1705-1709 ◽  
Author(s):  
M. Bertolotti ◽  
B. Daino ◽  
D. Sette
Keyword(s):  
Laser Beam ◽  
Spatial Coherence

scholarly journals Pyroelectric-controlled bending of a self-trapped optical beam in a photorefractive iron doped lithium niobate crystal

2021 ◽  
pp. 2150003
Author(s):  
Lusine Tsarukyan ◽  
Anahit Badalyan ◽  
Fabrice Devaux ◽  
Mathieu Chauvet ◽  
Rafael Drampyan
Keyword(s):  
Lithium Niobate ◽  
Laser Beam ◽  
Lithium Niobate Crystal ◽  
Optical Beam ◽  
The Self ◽  
Optical Information ◽  
Crystal Temperature ◽  
Experimental Demonstration ◽  
Pyroelectric Effect ◽  
Beam Bending

We present the experimental demonstration of a self-trapped optical beam bending in a photorefractive Fe-doped lithium niobate (LN:Fe) crystal controlled by the pyroelectric effect. Formation of self-trapped beams with typical [Formula: see text]50[Formula: see text][Formula: see text]m diameter and large bending of [Formula: see text]140[Formula: see text][Formula: see text]m are depicted in a 1[Formula: see text]cm length LN:Fe crystal for a laser beam at 632.8[Formula: see text]nm wavelength and 0.5[Formula: see text]mW power with a 30∘C crystal temperature change. The self-trapped beam bending is opposite to the crystal [Formula: see text]-axis. The underlying physics is elaborated and numerical simulations are performed. The long-living waveguiding channels with controlled curvilinear trajectories are promising for optical information routing.

Sign in / Sign up

Export Citation Format

Share Document