Results 81 to 90 of about 1,446 (193)
Broadband Parametric Amplification in AlGaAs‐on‐Insulator Nanowaveguides
Laser &Photonics Reviews, EarlyView.Harnessing the exceptional nonlinearity of AlGaAs‐on‐insulator nanowaveguides, four‐wave‐mixing parametric amplification achieves a record net on‐chip gain of 56 dB and a gain bandwidth exceeding 415 nm at telecom wavelengths. These results establish AlGaAsOI as a powerful platform for compact, high‐performance integrated nonlinear optical ...
Yanjing Zhao +6 more
wiley +1 more source
Collective stimulated Brillouin scatter
, 2011 We develop a statistical theory of stimulated Brillouin backscatter (BSBS) of a spatially and temporally partially incoherent laser beam for laser fusion relevant plasma. We find a new collective regime of BSBS which has a much larger threshold than the classical threshold of a coherent beam in long-scale-length laser fusion plasma.
Korotkevich, Alexander O. +2 more
openaire +2 more sources
Small, EarlyView.A multi‐wavelength Raman study of microwave‐assisted hydrothermal Ti3CNTx MXene, supported by theoretical calculations, identifies laser‐power thresholds and evaluates its ambient‐condition stability. ABSTRACT MXenes are emerging 2D nanomaterials that have attracted growing attention for their highly tunable atomic structure, composition, and surface ...
Subrata Ghosh +7 more
wiley +1 more source
Large on-chip Brillouin net amplification in silicon-based nano-photonics
AIP Advances, 2019 Recent developments in on-chip forward Brillouin scattering open up potential applications such as RF photonic signal processing, on-chip Brillouin amplification, and on-chip Brillouin lasers.
Hyeongpin Kim, Heedeuk Shin
doaj +1 more source
Flattening Energy Puddles for Enhanced Charge Transport in Wrinkled WSe2
Small, EarlyView.Strain‐inducing wrinkles in 1L‐WSe2 create carrier‐trapping energy puddles. Trioctylphosphine selenide (TOPSe) selectively passivates Se vacancies at these wrinkle sites, while steric hindrance suppresses basal‐plane reaction. Comprehensive suite of space‐resolved spectroscopic techniques reveals reduced nonradiative recombination, longer exciton ...
Dae Young Park +20 more
wiley +1 more source
Mitigating stimulated Brillouin scattering in multimode fibers with focused output via wavefront shaping. [PDF]
Nat Commun, 2023 Chen CW +11 more
europepmc +1 more source
Stimulated Brillouin scattering in glasses
Electronics Letters, 1967 An experiment is described in which the laser-fracture threshold of glass is compared with the stimulated-Brillouin-scattering threshold and intensity. It is demonstrated by means of an alteration of the laser-emission spectrum, which acts on s.B.s. and not on fracturing, that the two effects are not related.
J.P. Budin +3 more
openaire +1 more source
Threshold for stimulated Brillouin scattering in optical fibres
2007 European Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference, 2007 We show that in optical fiber the threshold exponential gain, Gth, for stimulated Brillouin scattering initiated by spontaneous Brillouin scattering is functionally and strongly dependent on the material, length and numerical aperture of the fiber and the pump wavelength.
V I, Kovalev, R G, Harrison
openaire +2 more sources
Small, EarlyView.Atomically dispersed Cu sites on Co3O4 nanoparticles establish well‐defined Cu–O–Co interfacial linkages that promote lattice oxygen activation at markedly reduced temperatures. This structural and electronic modulation yields over twenty‐fold higher low‐temperature formaldehyde sensing responses than CuO nanoparticle analogues, enabling selective and ...
Hamin Shin +7 more
wiley +1 more source
Quantum-enhanced stimulated Brillouin scattering spectroscopy and imaging. [PDF]
Optica, 2022 Li T +4 more
europepmc +1 more source