Results 1 to 10 of about 129,066 (229)

Optical characteristics of the skin with dark circles using pump-probe imaging [PDF]

open access: yesScientific Reports, 2022
Pump-probe imaging was first used for quantitative analysis of melanin in dark circles’ skin to improve the ability to diagnose and treat dark circles on human skin.
Yikang Hou   +4 more
doaj   +2 more sources

Efficient pump-probe sampling with a single-cavity dual-comb laser: Application in ultrafast photoacoustics [PDF]

open access: yesPhotoacoustics, 2023
Ultrafast pump-probe measurements are used to characterize various samples, such as biological cells, bulk, and thin-film structures. However, typical implementations of the pump-probe apparatus are either slow or complex and costly hindering wide ...
J. Pupeikis   +6 more
doaj   +2 more sources

Phase-matching free pulse retrieval based on plasma-induced defocusing [PDF]

open access: yesEPJ Web of Conferences, 2023
A phase-matching free pulse retrieval technique based on plasma-induced defocusing in a rare gas is presented. Based on a pump-probe setup, this technique uses a moderately intense pump laser pulse for ionizing the medium, creating in turn an ultrafast ...
Béjot Pierre   +4 more
doaj   +1 more source

Phonon pump enhanced fast and slow light in a spinning optomechanical system

open access: yesResults in Physics, 2021
We investigate the properties of the optical output fields in a spinning optomechanical system under the condition of optomechanically induced transparency (OMIT), where the cavity is optically driven by a strong pump field and a weak probe field and the
Hua-Jun Chen
doaj   +1 more source

Controllable Fast and Slow Light in Photonic-Molecule Optomechanics with Phonon Pump

open access: yesMicromachines, 2021
We theoretically investigate the optical output fields of a photonic-molecule optomechanical system in an optomechanically induced transparency (OMIT) regime, in which the optomechanical cavity is optically driven by a strong pump laser field and a weak ...
Huajun Chen
doaj   +1 more source

Dual Optomechanical Cavities for All-Optical Actuation and Sensing of Mechanical Motion

open access: yesIEEE Photonics Journal, 2022
Cavity optomechanics in the photonic devices enables a light-matter interaction in the chip-scale systems via the optical force driven mechanical motion.
Xia Ji   +4 more
doaj   +1 more source

Incoherent control of optical signals: Quantum-heat-engine approach

open access: yesPhysical Review Research, 2021
Optical pump-probe signals can be viewed as work done by the matter while transferring the energy between two coherent baths (from pump to probe). In thermodynamics, a heat engine, such as a laser, is a device which performs similar work but operating ...
Md. Qutubuddin, Konstantin E. Dorfman
doaj   +1 more source

Controlled ultrafast ππ*-πσ* dynamics in tryptophan-based peptides with tailored micro-environment

open access: yesCommunications Chemistry, 2021
Pump-probe experiments in the gas phase usually target neutral molecules. Here the authors couple an electron spray source with ultrafast pump-probe UV-Vis spectroscopy, to follow the ππ*-πσ* coupling in tryptophan-based ions.
Marius Hervé   +5 more
doaj   +1 more source

Nearly Degenerate Four-Wave Mixing in Single-Mode Fabry–Pérot Laser Diode Subject to Single Beam Optical Injection

open access: yesIEEE Photonics Journal, 2017
In this paper, nearly degenerate four-wave mixing created by pump–probe structure with small frequency spacing and enough high power is demonstrated and discussed by introducing single optical beam into single-mode Fabry–Pérot laser ...
Jian-Wei Wu, Yong Hyub Won
doaj   +1 more source

Pump-probe scheme for optical coherence tomography using indocyanine green mixed with albumin or human plasma [PDF]

open access: yes, 2005
Use of indocyanine green (ICG) in a pump-probe scheme for OCT is proposed. The study illustrates that ICG in protein solution shows unusual pump-probe imaging potential, indicating its usefulness as a contrast agent for ...
Applegate, Brian E.   +4 more
core   +1 more source

Home - About - Disclaimer - Privacy