A dual-functionality metalens to shape a circularly polarized optical vortex or a second-order cylindrical vector beam

In this paper, we have investigated the focusing of a second-order cylindrical vector beam by using a high numerical aperture (NA) lens limited by a ring aperture using the Richards-Wolf formulae. It was shown that the range of negative on-axis projections of the Poynting vector could be increased by increasing the depth of focus through the use of a ring aperture. It was shown that when focusing light with a lens with NA = 0.95, the use of a ring aperture limiting the entrance pupil angle to 0.9 of maximum, allows the depth of the region of negative on-axis Poynting vector projections to be four times increased, with the region width remaining almost unchanged and varying from 0.357 to 0.352 of the incident wavelength. Notably, the magnitude of the reverse energy flow was found to be larger than the direct one by a factor of 2.5.

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Focusing a second-order cylindrical vector beam with a gradient index Mikaelian lens

Computer Optics ◽

10.18287/2412-6179-co-633 ◽

2020 ◽

Vol 44 (1) ◽

pp. 29-33 ◽

Cited By ~ 2

Author(s):

S.S. Stafeev ◽

E.S. Kozlova ◽

A.G. Nalimov

Keyword(s):

Free Space ◽

Energy Flow ◽

Second Order ◽

Gradient Index ◽

Vector Beam ◽

Output Surface ◽

Direct Energy ◽

Lens Material ◽

Cylindrical Vector Beam

In this paper, we numerically simulate the focusing of a second-order cylindrical vector beam with a gradient index Mikaelian lens. It is shown that the lens forms a region of the reverse energy flow near its output surface. If the lens has an on-axis micropit, the region of the direct energy flow can be confined within the lens material, whereas that of the reverse energy flow is put out in free space.

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Transverse intensity at the tight focus of a second-order cylindrical vector beam

Computer Optics ◽

10.18287/2412-6179-co-835 ◽

2021 ◽

Vol 45 (2) ◽

pp. 165-171

Author(s):

E.S. Kozlova ◽

S.S. Stafeev ◽

S.A. Fomchenkov ◽

V.V. Podlipnov ◽

V.V. Kotlyar

Keyword(s):

Energy Flow ◽

Light Field ◽

Poynting Vector ◽

Near Field ◽

Fdtd Method ◽

Optical Microscope ◽

Second Order ◽

Vector Beam ◽

Tight Focus ◽

Cylindrical Vector Beam

In this paper, an effect of a reverse energy flow at the focus of a second-order cylindrical vector beam which passed through amplitude zone plate was investigated with a scanning near-field optical microscope. A comparison of the intensity distribution detected with a pyramidal metallized cantilever with a hole and the characteristics of the light field calculated using a FDTD method and the Richards-Wolf formulas suggests that the cantilever is sensitive to the transverse intensity component rather than the total intensity or the components of the Poynting vector in the backflow region.

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An all-fiber laser for cylindrical vector beam

10.1117/12.870171 ◽

2010 ◽

Cited By ~ 2

Author(s):

Lixin Xu ◽

Rui Zheng ◽

Chun Gu ◽

Anting Wang ◽

Hai Ming

Keyword(s):

Fiber Laser ◽

Vector Beam ◽

Cylindrical Vector Beam

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Direct Generation of Cylindrical Vector Beam from Nd:YAG Laser Cavity

2005 Pacific Rim Conference on Lasers & Electro-Optics ◽

10.1109/cleopr.2005.1569552 ◽

2006 ◽

Author(s):

Y. Kozawa ◽

T. Yoneyama ◽

S. Sato

Keyword(s):

Nd:Yag Laser ◽

Laser Cavity ◽

Vector Beam ◽

Direct Generation ◽

Cylindrical Vector Beam

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Cylindrical vector beam multiplexer/demultiplexer using off-axis polarization control

Light Science & Applications ◽

10.1038/s41377-021-00667-7 ◽

2021 ◽

Vol 10 (1) ◽

Author(s):

Shuqing Chen ◽

Zhiqiang Xie ◽

Huapeng Ye ◽

Xinrou Wang ◽

Zhenghao Guo ◽

...

Keyword(s):

Wavelength Division Multiplexing ◽

Transmission Rate ◽

High Capacity ◽

Wavelength Division ◽

Polarization Control ◽

Vector Beam ◽

Vector Mode ◽

Control Technologies ◽

Polarization Division Multiplexing ◽

Cylindrical Vector Beam

AbstractThe emergence of cylindrical vector beam (CVB) multiplexing has opened new avenues for high-capacity optical communication. Although several configurations have been developed to couple/separate CVBs, the CVB multiplexer/demultiplexer remains elusive due to lack of effective off-axis polarization control technologies. Here we report a straightforward approach to realize off-axis polarization control for CVB multiplexing/demultiplexing based on a metal–dielectric–metal metasurface. We show that the left- and right-handed circularly polarized (LHCP/RHCP) components of CVBs are independently modulated via spin-to-orbit interactions by the properly designed metasurface, and then simultaneously multiplexed and demultiplexed due to the reversibility of light path and the conservation of vector mode. We also show that the proposed multiplexers/demultiplexers are broadband (from 1310 to 1625 nm) and compatible with wavelength-division-multiplexing. As a proof of concept, we successfully demonstrate a four-channel CVB multiplexing communication, combining wavelength-division-multiplexing and polarization-division-multiplexing with a transmission rate of 1.56 Tbit/s and a bit-error-rate of 10−6 at the receive power of −21.6 dBm. This study paves the way for CVB multiplexing/demultiplexing and may benefit high-capacity CVB communication.

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