Article (Scientific journals)
Ultrafast acousto-optic mode conversion in optically birefringent ferroelectrics
Lejman, Mariusz; Vaudel, Gwenaelle; Infante, Ingrid C. et al.
2016In Nature Communications, 7
Peer reviewed
 

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Abstract :
[en] The ability to generate efficient giga-terahertz coherent acoustic phonons with femtosecond laser makes acousto-optics a promising candidate for ultrafast light processing, which faces electronic device limits intrinsic to complementary metal oxide semiconductor technology. Modern acousto-optic devices, including optical mode conversion process between ordinary and extraordinary light waves (and vice versa), remain limited to the megahertz range. Here, using coherent acoustic waves generated at tens of gigahertz frequency by a femtosecond laser pulse we reveal the mode conversion process and show its efficiency in ferroelectric materials such as BiFeO3 and LiNbO3. Further to the experimental evidence, we provide a complete theoretical support to this all-optical ultrafast mechanism mediated by acousto-optic interaction. By allowing the manipulation of light polarization with gigahertz coherent acoustic phonons, our results provide a novel route for the development of next-generation photonic-based devices and highlight new capabilities in using ferroelectrics in modern photonics.
Disciplines :
Physics
Author, co-author :
Lejman, Mariusz
Vaudel, Gwenaelle
Infante, Ingrid C.
Ievgeniia, Chaban
Pezeril, Thomas
Edely, Mathieu
Nataf, Guillaume F.
Guennou, Mael  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
Kreisel, Jens ;  University of Luxembourg > Rectorate
Gusev, Vitalyi E.
Brahim, Dkhil
Ruello, Pascal
External co-authors :
yes
Language :
English
Title :
Ultrafast acousto-optic mode conversion in optically birefringent ferroelectrics
Publication date :
2016
Journal title :
Nature Communications
Volume :
7
Peer reviewed :
Peer reviewed
Focus Area :
Physics and Materials Science
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