Creation of Hollow-Gaussian Beam for Optical Trap by Dual-beam Nonliear Fabry-perot Interferometer

In this paper, a model of dual-beam nonlinear Fabry-Perot interferometer (DBNFPI) for creation laser hollow-Gaussian beam (HGB) is investigated. It includes a thin film of organic dye sandwiched between two optical mirrors, and irradiated by two signal and pump laser Gaussian beams. Based on the equation describing the output-input relation of intensities concerning pump intensity and the expression of the spatial intensity distribution of output signal beam (OSB), the range of pump intensity and collection of designed parameters are numerically calculated and discussed for HGB creation. These results give us the opportunity to use DBNFPI for optical trap of low-index dielectric particles.

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Spatial modulation of Gaussian Beam by Dual-Beam Nonlinear Fabry-Perot Interferometer

Optik ◽

10.1016/j.ijleo.2021.167248 ◽

2021 ◽

pp. 167248

Author(s):

Quy Ho Quang ◽

ThanhThai Doan ◽

Kien Bui Xuan ◽

Luu Mai Van ◽

Quang Ho Dinh ◽

...

Keyword(s):

Gaussian Beam ◽

Spatial Modulation ◽

Dual Beam ◽

Fabry Perot

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Relative phase shifts of apertured Gaussian beams and transformation of a Gaussian beam through a phase aperture

Applied Optics ◽

10.1364/ao.36.000772 ◽

1997 ◽

Vol 36 (4) ◽

pp. 772 ◽

Cited By ~ 14

Author(s):

Zhiping Jiang ◽

Qisheng Lu ◽

Zejin Liu

Keyword(s):

Gaussian Beam ◽

Relative Phase ◽

Phase Shifts ◽

Gaussian Beams

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Gaussian beam migration

Geophysics ◽

10.1190/1.1442788 ◽

1990 ◽

Vol 55 (11) ◽

pp. 1416-1428 ◽

Cited By ~ 293

Author(s):

N. Ross Hill

Keyword(s):

Gaussian Beam ◽

Wave Field ◽

Seismic Source ◽

Velocity Model ◽

Downward Continuation ◽

Gaussian Beams ◽

Seismic Velocities ◽

Migration Method ◽

Gaussian Beam Migration ◽

Lateral Variations

Just as synthetic seismic data can be created by expressing the wave field radiating from a seismic source as a set of Gaussian beams, recorded data can be downward continued by expressing the recorded wave field as a set of Gaussian beams emerging at the earth’s surface. In both cases, the Gaussian beam description of the seismic‐wave propagation can be advantageous when there are lateral variations in the seismic velocities. Gaussian‐beam downward continuation enables wave‐equation calculation of seismic propagation, while it retains the interpretive raypath description of this propagation. This paper describes a zero‐offset depth migration method that employs Gaussian beam downward continuation of the recorded wave field. The Gaussian‐beam migration method has advantages for imaging complex structures. Like finite‐difference migration, it is especially compatible with lateral variations in velocity, but Gaussian beam migration can image steeply dipping reflectors and will not produce unwanted reflections from structure in the velocity model. Unlike other raypath methods, Gaussian beam migration has guaranteed regular behavior at caustics and shadows. In addition, the method determines the beam spacing that ensures efficient, accurate calculations. The images produced by Gaussian beam migration are usually stable with respect to changes in beam parameters.

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Trapping positions in a dual-beam optical trap

Journal of Applied Physics ◽

10.1063/5.0068183 ◽

2021 ◽

Vol 130 (18) ◽

pp. 183105

Author(s):

Aidan Rafferty ◽

Thomas C. Preston

Keyword(s):

Optical Trap ◽

Dual Beam

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Probing the interaction between two microspheres in a single Gaussian beam optical trap

10.1117/12.2237600 ◽

2016 ◽

Author(s):

Praveen Parthasarathi ◽

Shruthi Subhash Iyengar ◽

Yogesha Lakkegowda ◽

Sarbari Bhattacharya ◽

Sharath Ananthamurthy

Keyword(s):

Gaussian Beam ◽

Optical Trap

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Spatial and spectral response of a Fabry–Perot interferometer illuminated by a Gaussian beam

Applied Optics ◽

10.1364/ao.34.004703 ◽

1995 ◽

Vol 34 (22) ◽

pp. 4703 ◽

Cited By ~ 11

Author(s):

Enrico Nichelatti ◽

Gianemilio Salvetti

Keyword(s):

Gaussian Beam ◽

Spectral Response ◽

Fabry Perot

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Viscoelastic deformation of lipid bilayer vesicles

Soft Matter ◽

10.1039/c5sm01565k ◽

2015 ◽

Vol 11 (37) ◽

pp. 7385-7391 ◽

Cited By ~ 11

Author(s):

Shao-Hua Wu ◽

Shalene Sankhagowit ◽

Roshni Biswas ◽

Shuyang Wu ◽

Michelle L. Povinelli ◽

...

Keyword(s):

Lipid Bilayer ◽

Optical Trap ◽

Strain Response ◽

Viscoelastic Deformation ◽

Stress Strain ◽

Dual Beam ◽

Lipid Bilayer Vesicles ◽

Lipid Bilayer Vesicle ◽

Bilayer Vesicle

A dual-beam optical trap (DBOT, left) is used to characterize a viscoelastic stress–strain response in a lipid bilayer vesicle (right).

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Turbulent Distance of Partially Coherent Hollow Gaussian Beams

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.321.256 ◽

2011 ◽

Vol 321 ◽

pp. 256-260

Author(s):

Bang Yuan Hao

Keyword(s):

Gaussian Beam ◽

Optical Communication ◽

Beam Propagation ◽

Gaussian Beams ◽

Partially Coherent ◽

Propagation Factor ◽

Communication Links ◽

Beam Propagation Factor ◽

Angular Spreading

For partially coherent hollow Gaussian beam (HGB), the turbulent distance, in which all of the spatial and angular spreading and the beam propagation factor increasing due to turbulence can be neglected, has been investigated in detail. It is shown that the turbulent distance of partial coherent HGBs increases with increasing beam order and wavelength, and decreasing turbulent parameter and coherent parameter. With increasing waist width, the turbulent distance first increases and then decreases. Furthermore, the turbulent distance of a HGB is much larger than that of the corresponding Gaussian Schell-model (GSM) beam when choosing the appropriate value of the waist width, implying that a HGB may be more appropriate to be used in optical communication links than a GSM beam.

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