Results 91 to 100 of about 179,343 (322)
Black Phosphorus Terahertz Photodetectors [PDF]
Advanced Materials, 2015 The discovery of graphene and the related fascinating capabilities have triggered an unprecedented interest in inorganic two-dimensional (2D) materials. Despite the impressive impact in a variety of photonic applications, the absence of energy gap has hampered its broader applicability in many optoelectronic devices.
Viti L +6 more
openaire +4 more sources
Cross‐Phase Modulation via Time‐Varying Epsilon‐Near‐Zero Metasurfaces
Advanced Optical Materials, EarlyView.Time‐varying epsilon‐near‐zero metasurfaces are shown to enable cross‐phase modulation beyond conventional ENZ excitation. By engineering dual absorption bands and exploiting oblique ultrafast pumping, large and broadband frequency translations are achieved at low pump energies.
Rakesh Dhama +4 more
wiley +1 more source
Nonlinear terahertz devices utilizing semiconducting plasmonic metamaterials
, 2015 The development of responsive metamaterials has enabled the realization of compact tunable photonic devices capable of manipulating the amplitude, polarization, wave vector, and frequency of light. Integration of semiconductors into the active regions of
Averitt, Richard D. +8 more
core +1 more source
Optics Express, 2013 We present a review of recent developments in THz coherent systems based on photonic local oscillators. We show that such techniques can enable the creation of highly coherent, thus highly sensitive, systems for frequencies ranging from 100 GHz to 5 THz, within an energy efficient integrated platform.
Alwyn J. Seeds +13 more
openaire +3 more sources
Bridging Optical and Mechanical Metamaterial/Metasurface Realms Toward Integrated Meta‐Systems
Advanced Optical Materials, EarlyView.This perspective describes the rise of metamaterials in the field of materials science, specifically with optical and mechanical functionality. Fundamentals of both optical and mechanical metamaterials are discussed with a review of state‐of‐the‐art metamaterial science.
Justin Brackenridge +2 more
wiley +1 more source
Narrow Linewidth Distributed Bragg Reflectors Based on InGaN/GaN Laser
Micromachines, 2019 A variety of emerging technologies, such as visible light communication systems, require narrow linewidths and easy-to-integrate light sources. Such a requirement could be potentially fulfilled with the distributed Bragg reflector (DBR) lasers, which are
Wuze Xie +5 more
doaj +1 more source
Fluence and polarisation dependence of GaAs based Lateral Photo-Dember terahertz emitters
, 2014 We characterise THz output of lateral photo-Dember (LPD) emitters based on semi-insulating (SI), unannealed and annealed low temperature grown (LTG) GaAs.
Apostolopoulos, V. +6 more
core +1 more source
Tutorial: Real-time coherent terahertz imaging of objects moving in one direction with constant speed [PDF]
, 2023 Takeshi Yasui, Emmanuel Abraham
openalex +1 more source
Heterostructure terahertz devices [PDF]
Journal of Physics: Condensed Matter, 2008 The terahertz (THz) range of frequencies is borderline between microwave electronics and photonics. It corresponds to the frequency bands of molecular and lattice vibrations in gases, fluids, and solids. The importance of the THz range is in part due to numerous potential and emerging applications which include imaging and characterization, detection ...
openaire +2 more sources
Experimental Evidence of Free Carrier Generation in 2D Hybrid Organic–Inorganic Perovskites
Advanced Optical Materials, EarlyView.ABSTRACT Despite the significant potential of 2D hybrid organic–inorganic perovskites (2DHOIPs) for high‐efficiency optoelectronics application‐comparable to their 3D counterparts, the fundamental carrier photogeneration remains unclear. In contrast to conventional ultrafast optical property characterization, we use ultrafast photocurrent spectroscopy ...
Tuhin Ghosh +8 more
wiley +1 more source