Generation of sub-wavelength longitudinal magnetic probe and multiple spots using circularly polarized annular multi-Gaussian beam

Seethalakshmi, S.; Udhayakumar, M.; Priyadharsini, N.; Rajesh, K. B.; Jaroszewicz, Zbigniew

doi:10.1007/s12596-019-00571-9

“…Moreover, the FWHM and DOF achieved here is much higher than the our previously proposed methods . [62][63][64] These focal structures found potential applications in optical recording, optical trapping, optical microscopy etc [1][2][3][4][5][6][7]. Fig.…”

Section: Fig3 Schematic Representation For Tight Focusing Of Cvb With...mentioning

confidence: 99%

Generation of axially splitted ultra-long multiple optical needles/optical tubes using generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter

Thiruarul¹,

Charles²,

Lavanya³

et al. 2022

Self Cite

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Based on vector diffraction theory and annular Walsh function filter, axially splitted ultra-long multiple optical needles/optical tubes of electric as well as magnetic field distributions are numerically generated by generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter. This multiple optical structures can be conveniently tailored by properly tuning the initial phase of the Cylindrical vector beam(CVB) and Walsh order of the annular Walsh function filter. Furthermore, the effect of energy flux density(Poynting vector) as well as Spin angular momentum(SAM) distribution in the focal region are theoretically analyzed. We expect that such an axially splitted focal systems could be applicable in optical trapping and manipulation of multiple particles, optical super resolution microscopy etc.

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Generation of two kinds of optical chains with multi-zone fan-shaped filter

Zhang

¹

,

Zuo

²

,

Zhou

³

et al. 2022

J Opt

3

0

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Generation of Axially Splitted Ultra-Long Multiple Optical Needles/Optical Tubes Using Generalized Cylindrical Vector Bessel Gaussian Beam Phase Modulated by Annular Walsh Function Filter

Thiruarul¹,

J.²,

Lavanya³

et al. 2022

Preprint

0

View full text Add to dashboard Cite

Based on vector diffraction theory and annular Walsh function filter, axially splitted ultra-long multiple optical needles/optical tubes of electric as well as magnetic field distributions are numerically generated by generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter. This multiple optical structures can be conveniently tailored by properly tuning the initial phase of the Cylindrical vector beam(CVB) and Walsh order of the annular Walsh function filter. Furthermore, the effect of energy flux density(Poynting vector) as well as Spin angular momentum(SAM) distribution in the focal region are theoretically analyzed. We expect that such an axially splitted focal systems could be applicable in optical trapping and manipulation of multiple particles, optical super resolution microscopy etc.

show abstract

Generation of sub-wavelength longitudinal magnetic probe and multiple spots using circularly polarized annular multi-Gaussian beam

Cited by 3 publications

References 76 publications

Generation of axially splitted ultra-long multiple optical needles/optical tubes using generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter

Generation of axially splitted ultra-long multiple optical needles/optical tubes using generalized cylindrical vector Bessel Gaussian beam phase modulated by annular Walsh function filter

Generation of two kinds of optical chains with multi-zone fan-shaped filter

Generation of Axially Splitted Ultra-Long Multiple Optical Needles/Optical Tubes Using Generalized Cylindrical Vector Bessel Gaussian Beam Phase Modulated by Annular Walsh Function Filter

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