Results 71 to 80 of about 409,972 (287)
Advanced Functional Materials, EarlyView.Efficient two‐photon resonant Raman scattering (TRRS) is observed in the layered perovskite (PEA)2PbI4, with the biexciton level acting as an intermediate state. TRRS undergoes two‐photon frequency shift upon input frequency tuning, persists up to 90 K, and shows clear threshold behavior and polarization selection rules.
Seung Han Shin +7 more
wiley +1 more source
Experimental Study on the Generation of Optoelectronic Based Chaos Dynamics
Zanco Journal of Pure and Applied Sciences, 2019 In this paper, we present the experimental evidence of chaos generation, modulation by means of optoelectronic feedback of semiconductor laser. The output photocurrent of the pin photodiode is amplified and re-injected as a feedback to the semiconductor ...
Nahlah Q. Mohammed +3 more
doaj +1 more source
Development of the 2.7 μm to 3 μm Erbium-Doped Laser
Crystals, 2023 The 3 μm wavelength band laser is located on the strong absorption peak of water and the atmospheric transmission window. The 3 μm laser with high single pulse energy is used in medical treatment for cutting soft tissues and bones during surgery.
Guanghui Liu +7 more
doaj +1 more source
, 2017 We experimentally investigate the RF linewidth and timing jitter over a wide range of delay tuning in a self-mode-locked two-section quantum dash lasers emitting at ~ 1.55 micron and operating at ~ 21 GHz repetition rate subject to single and dual ...
Asghar, Haroon +4 more
core +1 more source
Progress in Optoelectronic Oscillators
Journal of Institute of Science and Technology, 2019 An optoelectronic oscillator (OEO) generates a spectrally pure and ultra-stable radio frequency signal from a continuous wave laser source (Yao et al. 2004). In a conventional electrical oscillator, the energy storage capacity is limited, which compromises stability of the signal.
Jay Sharping +2 more
openaire +2 more sources
An Optically Tunable Optoelectronic Oscillator [PDF]
Journal of Lightwave Technology, 2010 An optically tunable optoelectronic oscillator (OEO) implemented by employing a two-port optical phase modulator without using any electronic microwave filters is proposed and experimentally demonstrated. The key device in the system is the two-port phase modulator, which functions, in conjunction with a dispersive element in the loop, to form a high-Q
Wangzhe Li, Jianping Yao
openaire +1 more source
Opportunities of Semiconducting Oxide Nanostructures as Advanced Luminescent Materials in Photonics
Advanced Materials, EarlyView.The review discusses the challenges of wide and ultrawide bandgap semiconducting oxides as a suitable material platform for photonics. They offer great versatility in terms of tuning microstructure, native defects, doping, anisotropy, and micro‐ and nano‐structuring. The review focuses on their light emission, light‐confinement in optical cavities, and
Ana Cremades +7 more
wiley +1 more source
Directional Flow of Confined Polaritons in CrSBr
Advanced Materials, EarlyView.CrSBr, a layered magnetic semiconductor, naturally channels self‐hybridized excitonpolaritons into highly directional flow. Its intrinsic optical anisotropy, high refractive index, and strong lightmatter coupling enable long‐range guided modes along the a‐axis, with propagation lengths set by their excitonphoton admixture.
Pratap Chandra Adak +10 more
wiley +1 more source
Super-Homogeneous Saturation of Microwave-Photonic Gain in Optoelectronic Oscillator Systems
IEEE Photonics Journal, 2012 We show that the saturation characteristic of microwave-photonic gain is “super-homogeneous” such that the gain of a weaker tone saturates more rapidly than that of a stronger tone when both signals are transmitted over an intensity ...
W. Loh +3 more
doaj +1 more source
iBROW – innovative ultra-BROadband ubiquitous wireless communications through terahertz transceivers [PDF]
, 2016 No abstract ...
Achouche, Mohand +17 more
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