Calculation of optical trapping forces on a dielectric sphere in the ray optics regime produced by a radially polarized laser beam

Kawauchi, Hikaru; Yonezawa, Kazuhiro; Kozawa, Yuichi; Sato, Shunichi

doi:10.1364/ol.32.001839

Cited by 163 publications

(56 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Due to their characteristic of unique axial symmetry in both amplitude field and polarization, CVBs have been widely used in particle physics [2], optical tweezers [3], material processing [4] high-resolution metrology [5], and surface plasmon excitation [6]. Especially the radially polarized beam, which is attracting more and more attention.…”

Section: Introductionmentioning

confidence: 99%

A 1- $\mu$ m Cylindrical Vector Beam Fiber Ring Laser Based on a Mode Selective Coupler

Wang

Wan

Cao

et al. 2018

IEEE Photon. Technol. Lett.

View full text Add to dashboard Cite

Abstract-We propose and demonstrate a continuous-wave all-fiber ring laser generating cylindrical vector beams (CVBs) using a MSC as transverse mode converter and mode splitter. The MSC is fabricated by a novel method free of pre-tapering, achieving LP 11 mode with a high purity of > 96% near the wavelength of 1064 nm. The CVB fiber laser operates at a center wavelength of 1053.9 nm, with a 3 dB linewidth of less than 0.04 nm and a signal-to-background ratio of > 60 dB. The laser slope efficiency is > 9%. The radially and azimuthally polarized beams can be switched by adjusting the polarization controllers in the fiber ring cavity, with a high mode purity measured to be > 96%.Index Terms-Cylindrical vector beams, optical fiber lasers, mode converter. I. INTRODUCTIONhe cylindrical vector beams (CVBs) includes radially and azimuthally polarized beams [1]. Due to their characteristic of unique axial symmetry in both amplitude field and polarization, CVBs have been widely used in particle physics [2], optical tweezers [3], material processing [4] high-resolution metrology [5], and surface plasmon excitation [6]. Especially the radially polarized beam, which is attracting more and more attention.Various kinds of continuous-wave (CW) CVB generation techniques have been demonstrated with the use of certain spatial polarization selective elements introduced into the laser

show abstract

Section: Introductionmentioning

confidence: 99%

A 1- $\mu$ m Cylindrical Vector Beam Fiber Ring Laser Based on a Mode Selective Coupler

Wang

Wan

Cao

et al. 2018

IEEE Photon. Technol. Lett.

View full text Add to dashboard Cite

show abstract

“…In recent years, some inhomogeneously polarized lights have drawn much interest due to their unique properties in focal region [6]. Kawauchi and his co-workers [7] found that radially polarized beam has a higher axial trapping efficiency than circularly polarized doughnut beam because the stronger longitudinal intensity component of the tightly focusing radially polarized beam provides a stronger gradient force, meanwhile the longitudinal component does not contribute to the axial pointing along the axis, which means it does not cause the scatter forces. However, because of the trapping area in the high intensity focus for the radially polarized light, it is more likely to lead optical induce damage.…”

Section: Introductionmentioning

confidence: 99%

Three dimensional optical cage formed by TEM01 mode radially polarized Laguerre-Gaussian beam

Guo

Weng

Dong

et al. 2011

J Opt

View full text Add to dashboard Cite

Based on the vector diffraction theory, the focusing intensity distribution of TEM 01 mode radially polarized Laguerre-Gaussian beams in the focal region is investigated theoretically. By setting the parameters of the complex pupil filter at the pupil plane purposely, a single three-dimensional (3D) optical cage with symmetrical intensity along the z and x axes and the contrast ratio of 0.5 is obtained. Moreover, by optimizing the parameters of pupil filter, multi-three-dimensional optical cages with more excellent quality, such as the contrast ratio of the central optical cage reaching into 0.85, are achieved. In addition, the explanations of how the complex pupil filter affects the focal intensity are also given.

show abstract

“…According the orientation of electric fi eld, it includes radially and azimuthally polarized lights and may fi nd many signifi cant applications as in particle physics, 1 optical tweezers, 2 high-resolution microscopy 3 and material processing, 4 etc. These applications induced increasing interest in generating CVBs from an active resonator with utilization of various kinds of methods.…”

Section: Introductionmentioning

confidence: 99%

Generation of Cylindrical Vector Lights from Passively Q-Switched Nd:YAG Laser by Using Photonic Crystal Gratings

Shirakawa

Ueda

et al. 2009

The Review of Laser Engineering

View full text Add to dashboard Cite

Pulsed lights with cylindrical vector symmetry were produced from an end-pumped and passively-Qswitched Nd:YAG ceramic microchip laser with a piece of Cr 4+ :YAG crystal as saturable absorber and two multilayer concentric subwavelength gratings as polarization output couplers respectively. For radially polarized output, the averaged laser power reached 450 mW with a slope effi ciency of 30.2 %. The laser pulse had a peak power of 759 W, pulse duration of 86 ns and 6.7-kHz repetition rate with a polarization degree of 97.4 % at 3.7-W absorbed pump power. For azimuthally polarized output, the laser power reached 512 mW with a slope efficiency of nearly 60 %. The pulse had 1.15-kW peak power with 40-ns duration and 11-kHz repetition rate with a polarization degree of 97.6 % at 3.9-W absorbed pump power. These results manifest a practical, high-power laser system operating with a radial or azimuthal polarization could be established in an end-pumped microchip laser resonator by combining the passive Q switch technique with polarization control function of photonic crystal grating.

show abstract

Calculation of optical trapping forces on a dielectric sphere in the ray optics regime produced by a radially polarized laser beam

Cited by 163 publications

References 15 publications

A 1- $\mu$ m Cylindrical Vector Beam Fiber Ring Laser Based on a Mode Selective Coupler

A 1- $\mu$ m Cylindrical Vector Beam Fiber Ring Laser Based on a Mode Selective Coupler

Three dimensional optical cage formed by TEM01 mode radially polarized Laguerre-Gaussian beam

Generation of Cylindrical Vector Lights from Passively Q-Switched Nd:YAG Laser by Using Photonic Crystal Gratings

Contact Info

Product

Resources

About