scholarly journals Photoinduced change in the shape of azobenzene-based molecular glass particles fixed in agar gel

RSC Advances ◽  
2016 ◽  
Vol 6 (43) ◽  
pp. 36761-36765 ◽  
Author(s):  
Ryota Ichikawa ◽  
Hideyuki Nakano
Keyword(s):  
Laser Beam ◽  
Photoinduced Change ◽  
Agar Gel ◽  
Molecular Glass ◽  
Linearly Polarized

A new photomechanical phenomenon was observed, in which azobenzene-based molecular glass particles fixed in an isotropic agar gel environment became elongated and formed string-like structures upon being irradiated with a linearly polarized laser beam.

Laser beam guiding in partially stripped magnetized quantum plasma

Laser Physics ◽  
2021 ◽  
Vol 32 (1) ◽  
pp. 016002
Author(s):  
Punit Kumar ◽  
Nisha Singh Rathore
Keyword(s):  
Laser Beam ◽  
Spot Size ◽  
Quantum Plasma ◽  
Beam Power ◽  
Linear Wave ◽  
Linear Wave Equation ◽  
Quantum Hydrodynamic Model ◽  
Bohm Potential ◽  
Expansion Technique ◽  
Linearly Polarized

Abstract Relativistic and ponderomotive nonlinearities arising by the passage of a linearly polarized laser beam through a partially stripped magnetized quantum plasma are analyzed. The interaction formalism has been developed using the recently developed quantum hydrodynamic model. The effects associated with the Fermi pressure, quantum Bohm potential and electron spin have been incorporated. A nonparaxial, non-linear wave equation has been obtained by the use of source dependent expansion technique and spot size has been evaluated. The nonlinear relativistic self-focusing tends to focus the beam while the ponderomotive nonlinearity tends to defocus. The effect of magnetization and quantum effects on the spot size and the beam power have been studied.

Generating Linearly Polarized TEM00Mode Laser Beam with Grating Mirror as the Back-Cavity Mirror

2014 ◽  
Vol 41 (3) ◽  
pp. 0302001
Author(s):  
方茗 Fang Ming ◽  
高健存 Gao Jiancun ◽  
唐新春 Tang Xinchun ◽  
唐淳 Tang Chun ◽  
裴正平 Pei Zhengping ◽  
...  
Keyword(s):  
Laser Beam ◽  
Linearly Polarized ◽  
Cavity Mirror

Influence of Magnetic Field on Level of Linearly Polarized Laser Beam Passing through Faraday Crystal

2021 ◽  
Vol 408 ◽  
pp. 129-140
Author(s):  
Samer H. Zyoud ◽  
Atef Abdelkader ◽  
Ahed H. Zyoud ◽  
Araa Mebdir Holi
Keyword(s):  
Magnetic Field ◽  
Electric Field ◽  
Laser Beam ◽  
Active Material ◽  
Polarized Light ◽  
Linearly Polarized ◽  
Physical Effects ◽  
Pass Through ◽  
Polarization Level ◽  
Optically Active Material

Many natural materials have the ability to rotate the polarization level of linearly polarized laser beam and pass through it. This phenomenon is called optical activity. In the event that a light beam (linearly polarized) passes through an optically active material, such as a quartz crystal, and projected vertically on the optical axis, the output beam will be polarized equatorially, and the vibration level will rotate at a certain angle [1], [2], [3]. A number of crystals, liquids, solutions, and vapors rotate the electric field of linearly polarized light that passes through them [4], [5], [6], [7]. Many different physical effects are applied to optical isotropic and transparent materials that cause them to behave as optical active materials, where they are able to rotate the polarization level of the polarized light linearly and pass through it [8], [9], [10]. These effects include mechanical strength, electric field, and magnetic field. By placing one of these effects on an optically transparent medium, it changes the behavior of the light travelling through it [11].

Surface intrinsic fluorescence spectroscopy of proteins using a UV linearly polarized pulsed laser beam

2000 ◽  
Author(s):  
S. Yapoudjian ◽  
M. Ivanova ◽  
Olivier P. Uteza ◽  
Vladimir I. Marine ◽  
Marc L. Sentis
Keyword(s):  
Fluorescence Spectroscopy ◽  
Laser Beam ◽  
Pulsed Laser ◽  
Intrinsic Fluorescence ◽  
Linearly Polarized ◽  
Pulsed Laser Beam

scholarly journals VACUUM BIREFRINGENCE CAUSED BY ARBITRARY SPIN PARTICLES

2008 ◽  
Vol 23 (04) ◽  
pp. 245-248 ◽  
Author(s):  
S. I. KRUGLOV
Keyword(s):  
Magnetic Field ◽  
Experimental Data ◽  
Laser Beam ◽  
Transverse Magnetic Field ◽  
Vacuum Polarization ◽  
Transverse Magnetic ◽  
Arbitrary Spin ◽  
Effective Lagrangian ◽  
Linearly Polarized ◽  
Higher Spin

We study the propagation of a linearly polarized laser beam in the external transverse magnetic field taking into consideration the vacuum polarization by arbitrary spin particles. Induced ellipticity of the beam is evaluated using the effective Lagrangian. With the help of the PVLAS experimental data, we obtain bounds on masses of charged higher spin particles contributed to ellipticity.

LASER FIELD INDUCED AZIMUTHAL ANCHORING GLIDING IN DYE DOPED NEMATIC LIQUID CRYSTALS

2005 ◽  
Vol 19 (28) ◽  
pp. 4185-4193
Author(s):  
ION PĂLĂRIE ◽  
NICOLETA EŞEANU
Keyword(s):  
Laser Beam ◽  
Easy Axis ◽  
Beam Polarization ◽  
Polarization Direction ◽  
Transmitted Intensity ◽  
Direction Parallel ◽  
Pump Probe ◽  
Probe Experiment ◽  
Linearly Polarized ◽  
Pump Probe Experiment

We have analyzed the rotating effect of an Ar+ linearly polarized laser beam on a dye-doped nematic liquid crystal (DDNLC) in a pump-probe experiment. An asymmetric capillary cell with two polymer coated glasses was used. An easy axis was induced by rubbing one surface, the other one remained non-oriented. The exciting laser beam entering the orienting surface has the polarization direction perpendicular to the easy axis. The time dependent transmitted intensity of a probe He – Ne laser beam (polarization direction parallel to the easy axis) has been measured. For large enough Ar+ laser power a non-monotonous curve (having one or even two maxima) has been observed. We develop a model which explains our experimental data by taking into account the gliding of the easy axis on the orienting surface. The azimuthal anchoring gliding angle has been estimated.

Sign in / Sign up

Export Citation Format

Share Document