scholarly journals Nonlinear optical transformation of the polarization state of circularly polarized light with holographic-cut cubic crystals

2011 ◽  
Vol 36 (2) ◽  
pp. 301 ◽  
Author(s):  
N. Minkovski ◽  
S. Kourtev ◽  
L. Canova ◽  
A. Jullien ◽  
O. Albert ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Polarization State ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Cubic Crystals ◽  
Optical Transformation

scholarly journals Circularly Polarized Light Detection by Chiral Photonic Cellulose Nanocrystal with ZnO Photoconductive Layer in Ultraviolet Region

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 3098
Author(s):  
Boyu Zhang ◽  
Sixiang Zhao ◽  
Yingying Yu ◽  
Ming Li ◽  
Liancheng Zhao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Polarization State ◽  
Polarized Light ◽  
Cellulose Nanocrystal ◽  
Ultraviolet Region ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Left Handed ◽  
Chiral Nematic ◽  
Wide Range

Circularly polarized light (CPL) detection and polarization state recognition are required for a wide range of applications. Conventional polarization detection with optical components causes difficulties for miniaturization and integration. An effective design strategy is proposed for direct CPL detection with chiral material. Here, we realized direct CPL detection based on the combination of chiral photonic cellulose nanocrystal (CNC) and ultraviolet-sensitive ZnO photoconductive material. The CNC layer deposited by evaporation-induced self-assembly established the left-handed chiral nematic structure with a photonic bandgap (PBG) to recognize left-handed CPL (LCPL) and right-handed CPL (RCPL) at specific wavelengths. The PBG of CNC layer has been modulated by the adjustment of chiral nematic pitch to match the semiconductor bandgap of ZnO film in ultraviolet region. The photocurrents under RCPL and LCPL are 2.23 × 10−6 A and 1.77 × 10−6 A respectively and the anisotropy factor Δgpc of 0.23 is acquired for the CPL detection based on the chiral photonic CNC. This design provides a new approach to the detection of CPL polarization state with competitive performance.

Development and performance of a versatile soft X-ray polarimeter

2010 ◽  
Vol 1 (SRMS-7) ◽  
Author(s):  
H. Wang ◽  
U. H. Wagner ◽  
S. S. Dhesi ◽  
K. J. S. Sawhney ◽  
F. Maccherozzi ◽  
...  
Keyword(s):  
Light Source ◽  
Rare Earths ◽  
Polarization State ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
X Ray ◽  
Arbitrary Polarization ◽  
And Performance ◽  
Transmission Phase

With modern undulators generating light of an arbitrary polarization state, experiments exploiting this feature in the soft X-ray region are becoming increasingly widespread. Circularly polarized light in the soft X-ray region is of particular interest to investigate of magnetic metals such as Fe, Co and Ni, and the rare earths. A versatile multilayer polarimeter has been designed and developed to characterize the polarization state of the soft X-ray beam. A W/B4C multilayer transmission phase retarder and reflection analyser has been used for polarimetry measurements on the beamline (I06) at Diamond Light Source. The design details of the polarimeter and preliminary polarimetry results are presented.

scholarly journals Multifunctional Metasurface Lens With Tunable Focus Based on Phase Transition Material

2021 ◽  
Vol 9 ◽  
Author(s):  
Yongkang Song ◽  
Weici Liu ◽  
Xiaolei Wang ◽  
Faqiang Wang ◽  
Zhongchao Wei ◽  
...  
Keyword(s):  
Phase Transition ◽  
Light Field ◽  
Focal Point ◽  
Incident Light ◽  
Polarization State ◽  
Polarized Light ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Multiple Focus ◽  
Linearly Polarized

Metasurfaces have powerful light field manipulation capabilities, which have been extensively studied in the past few years and have developed rapidly in various fields. At present, the focus of metasurface research has shifted to the tunable functionality. In this paper, a temperature-controllable multifunctional metasurface lens based on phase transition material is designed. First of all, by controlling the temperature of the desired working area and the polarization of the incident light, switching among multiple focus, single focus, and no focus at any position can be achieved, and the intensity and helicity of the output light can be adjusted. In addition, a polarization-sensitive intensity-tunable metalens based on the P-B phase principle is designed, when the incident light is linearly polarized light, left-handed circularly polarized light, or right-handed circularly polarized light, it has the same focal point but with different light field intensities. Therefore, the focused intensity can be tunable by the polarization state of the incident light.

scholarly journals Tight focusing of circularly polarized light limited by semicircular aperture

2021 ◽  
Vol 2103 (1) ◽  
pp. 012164
Author(s):  
V D Zaitsev ◽  
S S Stafeev ◽  
V V Kotlyar
Keyword(s):  
Focal Spot ◽  
Reverse Flow ◽  
Polarization State ◽  
Azimuthal Angle ◽  
Numerical Aperture ◽  
Polarized Light ◽  
Flow Region ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Direction Of Polarization

Abstract In this work, the focusing of a circularly polarized plane wave (wavelength 532 nm) was simulated by a lens with a numerical aperture NA = 0.95. The wave front was considered flat. When integrating according to the Richards-Wolf formulas, the semicircular aperture was set by limiting the azimuthal angle from 0 to π. It was shown that when focusing light with right and left circular polarization, the focal spot turns out to be elliptical - elongated along the y axis, and, depending on the direction of polarization, its center shifts by about 0.05 μm in different directions along the x axis. It was also shown that the reverse flow region is located near the focal spot (at a distance of 0.25 μm from the center). Depending on the direction of polarization, it is located either to the right or to the left of the focal spot. Thus, the polarization state of the incident radiation can be determined from the displacement of the spot in focus.

scholarly journals Emission of circularly polarized light by a linear dipole

2019 ◽  
Vol 5 (6) ◽  
pp. eaav7588 ◽  
Author(s):  
Martin Neugebauer ◽  
Peter Banzer ◽  
Sergey Nechayev
Keyword(s):  
Near Field ◽  
Polarization State ◽  
Polarized Light ◽  
Angular Spectrum ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Nanophotonic Devices ◽  
On Chip ◽  
The Individual ◽  
Linear Dipole

Controlling the polarization state and the propagation direction of photons is a fundamental prerequisite for many nanophotonic devices and a precursor for future on-chip communication, where the emission properties of individual emitters are particularly relevant. Here, we report on the emission of partially circularly polarized photons by a linear dipole. The underlying effect is linked to the near-field part of the angular spectrum of the dipole, and it occurs in any type of linear dipole emitter, ranging from atoms and quantum dots to molecules and dipole-like antennas. We experimentally observe it by near-field to far-field transformation at a planar dielectric interface and numerically demonstrate the utility of this phenomenon by coupling the circularly polarized light to the individual paths of crossing waveguides.

scholarly journals Efficient Achromatic Broadband Focusing and Polarization Manipulation of a Novel Designed Multifunctional Metasurface Zone Plate

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3436
Author(s):  
Shaobo Ge ◽  
Weiguo Liu ◽  
Xueping Sun ◽  
Jin Zhang ◽  
Pengfei Yang ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Incident Light ◽  
Polarization State ◽  
Resonance Effect ◽  
Optical Design ◽  
Polarized Light ◽  
Simulation Method ◽  
Zone Plate ◽  
Circularly Polarized Light ◽  
Circularly Polarized

In this paper, comprehensively utilizing the diffraction theory and electromagnetic resonance effect is creatively employed to design a multifunctional metasurface zone plate (MMZP) and achieve the control of polarization states, while maintaining a broadband achromatic converging property in a near-IR region. The MMZP consists of several rings with fixed width and varying heights; each ring has a number of nanofins (usually called meta-atoms). The numerical simulation method is used to analyze the intensity distribution and polarization state of the emergent light, and the results show that the designed MMZP can realize the polarization manipulation while keeping the broadband in focus. For a specific design wavelength (0.7μm), the incident light can be converted from left circularly polarized light to right circularly polarized light after passing through the MMZP, and the focusing efficiency reaches above 35%, which is more than twice as much as reported in the literature. Moreover, the achromatic broadband focusing property of the MMZP is independent with the polarization state of the incident light. This approach broadens degrees of freedom in micro-nano optical design, and is expected to find applications in multifunctional focusing devices and polarization imaging.

Homochiral One-Dimensional ABX3 Lead Halide Perovskites with High-Tc Quadratic Nonlinear Optical and Dielectric Switchings

2021 ◽  
Author(s):  
Hang Peng ◽  
Yu-Hua Liu ◽  
Xue-Qin Huang ◽  
Qin Liu ◽  
Zi-Hong Yu ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Polarized Light ◽  
High Tc ◽  
Inorganic Hybrid ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
One Dimensional ◽  
Nonvolatile Memories ◽  
Halide Perovskites ◽  
Lead Halide

Chiral organic-inorganic hybrid lead-halide perovskites have attracted increasing attention for their wide applications prospect in chiroptoelectronics, such as circularly polarized light (CPL) photodetectors and LEDs, nonvolatile memories, and spintronics, etc....

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