Results 31 to 40 of about 79,494 (306)

Study of the ${\mathit{C}}_{\mathit{n}}^{\mathbf{2}}$ Model through the New Dimensionless Temperature Structure Function near the Sea Surface in the South China Sea

Remote Sensing, 2023
The refractive index structure constant Cn2 near the ocean surface is an important parameter for studying atmospheric optical turbulence over the ocean.
Feifei Wang, Kun Zhang, Gang Sun, Qing Liu, Xuebin Li, Tao Luo   +5 more
doaj   +1 more source

Interaction between graphene-coated nanowires revisited with transformation optics [PDF]

, 2017
The interaction between graphene-coated nanostructures provides interesting optical properties not found in isolated graphene plasmonic structures.
Jiang, Jing, Baile Zhang, Luo, Yu, Zhang, Daohua, Daohua Zhang, Zhang, Baile, Jing Jiang, Yu Luo   +7 more
core   +1 more source

Scattering of Partially Coherent Vector Beams by a Deterministic Medium Having Parity-Time Symmetry

Photonics, 2022
We study the scattering properties of the partially coherent vector beams with the deterministic media having the classic symmetric and parity-time (PT) symmetric scattering potential functions.
Xuan Zhang, Yahong Chen, Fei Wang, Yangjian Cai   +3 more
doaj   +1 more source

Wigner cross-terms in sampled and other periodic signals [PDF]

, 2009
Paper presented at Frontiers in Optics (FiO) San Jose, California, October 11, 2009If we sample a scalar wave field, it becomes periodic in frequency.
John T Sheridan, John J. Healy, William T. Rhodes, Healy, John J., Rhodes, William T., Sheridan, John T.   +5 more
core   +1 more source

Graphene, plasmons and transformation optics [PDF]

, 2015
Here we study subwavelength gratings for coupling into graphene plasmons by means of an an- alytical model based on transformation optics that is not limited to very shallow gratings.
Ren, K, Kraft, M, Arroyo Huidobro, P, Pendry, J, Maier, SA   +4 more
core   +1 more source

Geometrical and physical optics analysis for mm-wavelength refractor telescopes designed to map the cosmic microwave background [PDF]

, 2020
We present a compact two-lens high-density polyethylene (HDPE) f/1.6 refractor design that is capable of supporting a 28-deg diffraction-limited field of view at 1-mm wavelengths and contrast it to a similar two-lens refractor using silicon lenses.
Gudmundsson, Jon E.,
core   +1 more source

A Mid-Infrared Quantum Cascade Laser Ultra-Sensitive Trace Formaldehyde Detection System Based on Improved Dual-Incidence Multipass Gas Cell

Sensors, 2023
Formaldehyde (HCHO) is a tracer of volatile organic compounds (VOCs), and its concentration has gradually decreased with the reduction in VOC emissions in recent years, which puts forward higher requirements for the detection of trace HCHO.
Tao Wu, Renzhi Hu, Pinhua Xie, Lijie Zhang, Changjin Hu, Xiaoyan Liu, Jiawei Wang, Liujun Zhong, Jinzhao Tong, Wenqing Liu   +9 more
doaj   +1 more source

Experimental implementation of the universal transpose operation using the structural physical approximation [PDF]

, 2011
The universal transpose of quantum states is an antiunitary transformation that is not allowed in quantum theory. In this work, we investigate approximating the universal transpose of quantum states of two-level systems (qubits) using the method known as
Bae, Joonwoo, Ra, YS, Joonwoo Bae, Kim, Yong-Su, Kim, YH, Yoon-Ho Kim, Lim, Hyang-Tag, Kim, YS, Lim, HT, Bae, J, Kim, Yoon-Ho, Hyang-Tag Lim, Yong-Su Kim, Ra, Young-Sik, Young-Sik Ra   +14 more
core   +1 more source

Study on Two-Dimensional Exit Pupil Expansion for Diffractive Waveguide Based on Holographic Volume Grating

Applied Sciences, 2023
Diffraction gratings are becoming a preferred option for waveguide head-mounted in–out coupling devices due to their flexible optical properties and small size and light weight.
Mianhui Weng, Yizhao Wang, Xuechang Ren, Qinghong Lu   +3 more
doaj   +1 more source

Simulation Analysis of a Wavefront Reconstruction of a Large Aperture Laser Beam

Sensors, 2023
In order to solve the problem of atmospheric influence on the far-field measurement of the quality of a laser beam, we proposed a direct wavefront measurement system based on the Hartmann detection principle, which can measure large apertures and high ...
Gangyu Wang, Zaihong Hou, Laian Qin, Xu Jing, Yi Wu   +4 more
doaj   +1 more source