Optically Induced Coherent Phonons in Bismuth Oxyiodide (BiOI) Nanoplatelets.
Sign Up to like & getrecommendations! Published in 2021 at "Nano letters"
DOI: 10.1021/acs.nanolett.1c00530
Abstract: Bismuth oxyiodide (BiOI) is a promising material for photocatalysis combining intriguing optical and structural properties. We show that excitation by a femtosecond laser pulse creates coherent phonons inducing a time-variant oscillating modulation of the optical… read more here.
Keywords: coherent phonons; optically induced; induced coherent; phonons bismuth ... See more keywords
Dynamics of ultrafast phase transitions in MgF2 triggered by laser-induced THz coherent phonons
Sign Up to like & getrecommendations! Published in 2022 at "Scientific Reports"
DOI: 10.1038/s41598-022-09815-4
Abstract: The advent of free-electron lasers opens new routes for experimental high-pressure physics, which allows studying dynamics of condensed matter with femtosecond resolution. A rapid compression, that can be caused by laser-induced shock impact, leads to… read more here.
Keywords: coherent phonons; dynamics ultrafast; phase transitions; laser ... See more keywords
Control of the Dephasing of the Coherent Phonons Excited by Femtosecond Laser Pulses in Opaque Crystals
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Experimental and Theoretical Physics"
DOI: 10.1134/s1063776119060050
Abstract: The dephasing of coherent phonons in semimetals and semiconductors is studied using nondegenerate excitation and probing by femtosecond laser pulses. The dependences of the lifetimes of phonons of various symmetries on the exciting-pulse duration, the… read more here.
Keywords: laser pulses; coherent phonons; dephasing coherent; femtosecond laser ... See more keywords
Time-Domain Investigations of Coherent Phonons in van der Waals Thin Films
Sign Up to like & getrecommendations! Published in 2020 at "Nanomaterials"
DOI: 10.3390/nano10122543
Abstract: Coherent phonons can be launched in materials upon localized pulsed optical excitation, and be subsequently followed in time-domain, with a sub-picosecond resolution, using a time-delayed pulsed probe. This technique yields characterization of mechanical, optical, and… read more here.
Keywords: van der; coherent phonons; thin films; der waals ... See more keywords