scholarly journals Chiroptical Metasurfaces: Principles, Classification, and Applications

Sensors ◽  
2021 ◽  
Vol 21 (13) ◽  
pp. 4381
Author(s):  
Joohoon Kim ◽  
Ahsan Sarwar Rana ◽  
Yeseul Kim ◽  
Inki Kim ◽  
Trevon Badloe ◽  
...  
Keyword(s):  
Mirror Symmetry ◽  
Polarized Light ◽  
Two Dimensional ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
The Past ◽  
Sensing Platforms ◽  
Chiral Sensing ◽  
Chiral Materials ◽  
Significant Attention

Chiral materials, which show different optical behaviors when illuminated by left or right circularly polarized light due to broken mirror symmetry, have greatly impacted the field of optical sensing over the past decade. To improve the sensitivity of chiral sensing platforms, enhancing the chiroptical response is necessary. Metasurfaces, which are two-dimensional metamaterials consisting of periodic subwavelength artificial structures, have recently attracted significant attention because of their ability to enhance the chiroptical response by manipulating amplitude, phase, and polarization of electromagnetic fields. Here, we reviewed the fundamentals of chiroptical metasurfaces as well as categorized types of chiroptical metasurfaces by their intrinsic or extrinsic chirality. Finally, we introduced applications of chiral metasurfaces such as multiplexing metaholograms, metalenses, and sensors.

Emerging materials for circularly polarized light detection

2021 ◽  
Author(s):  
Xiaobo Shang ◽  
Li Wan ◽  
Lin Wang ◽  
Feng Gao ◽  
Hanying Li
Keyword(s):  
Polarized Light ◽  
Material Design ◽  
Light Detection ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
The Past

Detecting circularly polarized light (CPL) signals is the key technique in many advanced sensing technologies. Over the past decades, many efforts have been devoted to both the material design and...

scholarly journals Light helicity detector based on 2D magnetic semiconductor CrI3

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xing Cheng ◽  
Zhixuan Cheng ◽  
Cong Wang ◽  
Minglai Li ◽  
Pingfan Gu ◽  
...  
Keyword(s):  
Magnetic State ◽  
Magnetic Semiconductors ◽  
Magnetic Circular Dichroism ◽  
Optoelectronic Devices ◽  
Polarized Light ◽  
Magnetic Semiconductor ◽  
Two Dimensional ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Physical Phenomena

AbstractTwo-dimensional magnetic semiconductors provide a platform for studying physical phenomena at atomically thin limit, and promise magneto-optoelectronic devices application. Here, we report light helicity detectors based on graphene-CrI3-graphene vdW heterostructures. We investigate the circularly polarized light excited current and reflective magnetic circular dichroism (RMCD) under various magnetic fields in both monolayer and multilayer CrI3 devices. The devices exhibit clear helicity-selective photoresponse behavior determined by the magnetic state of CrI3. We also find abnormal negative photocurrents at higher bias in both monolayer and multilayer CrI3. A possible explanation is proposed for this phenomenon. Our work reveals the interplay between magnetic and optoelectronic properties in CrI3 and paves the way to developing spin-optoelectronic devices.

TWO-DIMENSIONAL CIRCULARLY-POLARIZED-LIGHT PHOTOELECTRON DIFFRACTION FOR THE ANALYSIS OF MAGNETIC AND ELECTRONIC PROPERTIES ON SURFACES

2000 ◽  
Vol 07 (05n06) ◽  
pp. 643-647 ◽  
Author(s):  
K. ENOMOTO ◽  
Y. MIYATAKE ◽  
K. FUKUMOTO ◽  
A. KOBAYASHI ◽  
K. HATTORI ◽  
...  
Keyword(s):  
Electronic Properties ◽  
Polarized Light ◽  
Emission Angle ◽  
Two Dimensional ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Photoelectron Diffraction ◽  
Angle Dependence ◽  
First Time ◽  
Good Agreement

Circular dichroism has been measured in the photoelectron diffraction of bulk W 4f photoelectrons from the W(110)(1×1) clean surface. The forward focusing peaks along the symmetric axis in the diffraction pattern showed an azimuthal rotation similar to those reported in a prior experiment on Si(001) and chemically shifted W 4f photoelectrons from the W(110)(1×1)-O surface. The emission angle dependence of the rotation angles has been measured and analyzed for the first time and the angles observed are in good agreement with those calculated using the formula Δ ϕ=m/kR sin 2θ derived previously by Daimon et al. [Jpn. J. Phys.32, L1480 (1993)] considering the angular dependence of m. This property gives a basis for the analysis of structure or various magnetic and electronic properties on surfaces.

scholarly journals Circularly Polarized Photodetectors Based on Chiral Materials: A Review

2021 ◽  
Vol 9 ◽  
Author(s):  
Can Zhang ◽  
Xiaohong Wang ◽  
Longzhen Qiu
Keyword(s):  
Optical Communication ◽  
Polarized Light ◽  
Research Progress ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Different Types ◽  
Quarter Wave ◽  
Chiral Materials ◽  
Optical Calculation ◽  
Recent Research Progress

Circularly polarized light (CPL) plays an important role in many photonic techniques, including tomographic scanning based on circular polarization ellipsometry, optical communication and information of spin, and quantum-based optical calculation and information processing. To fully exploit the functions of CPL in these fields, integrated photoelectric sensors capable of detecting CPL are essential. Photodetectors based on chiral materials can directly detect CPL due to their intrinsic optical activity, without the need to be coupled with polarizers and quarter-wave plates as in conventional photodetectors. This review summarizes the recent research progress in CPL photodetectors based on chiral materials. We first briefly introduce the CPL photodetectors based on different types of chiral materials and their working principles. Finally, current challenges and future opportunities in the development of CPL photodetectors are prospected.

Rotation of two-dimensional arrays of microparticles trappedby circularly polarized light

2004 ◽  
Vol 84 (26) ◽  
pp. 5440-5442 ◽  
Author(s):  
Kenji Miyakawa ◽  
Hiroto Adachi ◽  
Yoshinori Inoue
Keyword(s):  
Polarized Light ◽  
Two Dimensional ◽  
Circularly Polarized Light ◽  
Circularly Polarized

scholarly journals Stereophotographs of Atomic Structures by Circularly-polarized Light Two-dimensional Photoelectron Spectroscopy

Hyomen Kagaku ◽  
2005 ◽  
Vol 26 (12) ◽  
pp. 746-751 ◽  
Author(s):  
Fumihiko MATSUI ◽  
Yukako KATO ◽  
Fang Zhun GUO ◽  
Tomohiro MATSUSHITA ◽  
Hiroshi DAIMON
Keyword(s):  
Photoelectron Spectroscopy ◽  
Polarized Light ◽  
Two Dimensional ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Atomic Structures

Differential polarization imaging of sickled cells

1988 ◽  
Vol 46 ◽  
pp. 62-63
Author(s):  
Marcos F. Maestre
Keyword(s):  
Optical Properties ◽  
Theoretical Approach ◽  
Polarized Light ◽  
Polarization Microscopy ◽  
Spectroscopic Techniques ◽  
Polarization Imaging ◽  
Circularly Polarized Light ◽  
Circularly Polarized ◽  
Microscopic Scale ◽  
Chiral Structures

Recently we have developed a form of polarization microscopy that forms images using optical properties that have previously been limited to macroscopic samples. This has given us a new window into the distribution of structure on a microscopic scale. We have coined the name differential polarization microscopy to identify the images obtained that are due to certain polarization dependent effects. Differential polarization microscopy has its origins in various spectroscopic techniques that have been used to study longer range structures in solution as well as solids. The differential scattering of circularly polarized light has been shown to be dependent on the long range chiral order, both theoretically and experimentally. The same theoretical approach was used to show that images due to differential scattering of circularly polarized light will give images dependent on chiral structures. With large helices (greater than the wavelength of light) the pitch and radius of the helix could be measured directly from these images.

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