Results 211 to 220 of about 163,748 (368)

Frequency‐Selective Terahertz Wave Amplification by a Time Boundary in Huygens' Metasurface

Advanced Optical Materials, EarlyView.
In a free‐standing all‐dielectric Huygens' metasurface, ultrafast pulsed laser excitation is used to establish the time boundary for a coherent modulation to the electric and magnetic polarizability in the adiabatic limit. Amplification of THz waves at frequencies that can be continuously tuned have been achieved, showing an effective energy gain up to
Fu Deng, Fengjie Zhu, Xiaoyue Zhou, Yi Chan, Jingbo Wu, Caihong Zhang, Biaobing Jin, Jensen Li, Kebin Fan, Jingdi Zhang   +9 more
wiley   +1 more source

Optoelectronic Oscillator-Based Microwave Photonic 20× Frequency Multiplier with Low Phase Noise. [PDF]

Micromachines (Basel)
Jia S, Zhang Q, Zhang T, Yu J.
europepmc   +1 more source

Polarization‐Dependent Color Modulation in Electrodeposited Cellulose Nanocrystals and Birefringent Multilayers

Advanced Optical Materials, EarlyView.
This work demonstrates that wavelength selective reflection of circularly polarized light (CPL) of both handedness (right‐R or left‐L) can be achieved from self‐assembled cellulose nanocrystals (CNCs), breaking the inherent limitation of obtaining only L‐CPL reflection.
Alexandre Fonseca, Paul Grey, Bruno Mendes, Wadood Y. Hamad, Elvira Fortunato, Rodrigo Martins, Luís Pereira, Diana Gaspar   +7 more
wiley   +1 more source

A Review on Micro-Watts All-Digital Frequency Synthesizers. [PDF]

Micromachines (Basel)
Navaneethan V, Teo BCT, Muthukumaraswamy AA, Lim XY, Siek L.   +4 more
europepmc   +1 more source

Continuously Tuning Strong Exciton–Photon Coupling via Molecular Orientation in Organic Microcavities

Advanced Optical Materials, EarlyView.
Molecular orientation in vapor‐deposited glassy organic thin films can be tuned with processing conditions, offering control over transition dipole moment (TDM) alignment. Strongly coupled optical microcavities containing thin films of 4,4′‐bis[(N‐carbazole)styryl]biphenyl (BSB‐Cz) are demonstrated with tunable molecular orientation via substrate ...
Yicheng Liu, Russell J. Holmes
wiley   +1 more source

Temporal locking of pulses in injection locked oscillators. [PDF]

Sci Rep
Smulakovsky V, Diakonov A, Katzenlson A, Horowitz M.   +3 more
europepmc   +1 more source

Unidirectional Focusing of Light Using Structured Diffractive Surfaces

Advanced Optical Materials, EarlyView.
This study presents a reciprocal diffractive unidirectional focusing design based on linear and isotropic layers. A set of cascaded diffractive layers is designed using deep learning to achieve efficient forward light focusing while suppressing backward propagation across various illumination angles.
Yuhang Li, Tianyi Gan, Jingxi Li, Mona Jarrahi, Aydogan Ozcan   +4 more
wiley   +1 more source

Advancements in ultrafast photonics: confluence of nonlinear optics and intelligent strategies. [PDF]

Light Sci Appl
Wu Q, Peng L, Huang Z, Liu X, Luo M, Gao D, Meng H.   +6 more
europepmc   +1 more source

Characteristics of two extended-cavity diode lasers phase-locked with a 9.2 CHz frequency offset

, 2002
Taek-Yong Shin Kwon
openalex   +2 more sources

Temporal properties of two-tone suppression: Phase-locking of high characteristic frequency auditory-nerve fibers to low-frequency tones [PDF]

, 1978
Murray B. Sachs, Allyn E. Hubbard
openalex   +1 more source