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Tipo:	Artigo de Periódico
Título:	Lifetime and polarization for real and virtual correlated stokes-anti-stokes Raman scattering in diamond
Autor(es):	Filomeno Soares de Aguiar Júnior Marcelo Paleologo Elefteriadis de França Santos Carlos Henrique Monken Ado Jorio de Vasconcelos
Resumo:	The production of correlated Stokes (S) and anti-Stokes (aS) photons (SaS process) mediated by real or virtual phonon exchange has been reported in many transparent materials. In this work, we investigate the polarization and time correlations of SaS photon pairs produced in a diamond sample. We demonstrate that both S and aS photons have mainly the same polarization of the excitation laser. We also perform a pump-and-probe experiment to measure the decay rate of the SaS pair production, evidencing the fundamental difference between the real and virtual (phonon exchange) processes. In real processes, the rate of SaS pair production is governed by the phonon lifetime of (2.8 ± 0.3) ps, while virtual processes only take place within the time width of the pump laser pulses of approximately 0.4 ps. We explain the difference between real and virtual SaS processes by a phenomenological model, based on the probabilities of phonon creation and decay.
Assunto:	Espalhamento Fônons Polarização
Idioma:	eng
País:	Brasil
Editor:	Universidade Federal de Minas Gerais
Sigla da Instituição:	UFMG
Departamento:	ICX - DEPARTAMENTO DE FÍSICA
Tipo de Acesso:	Acesso Aberto
Identificador DOI:	https://doi.org/10.1103/PhysRevResearch.2.013084
URI:	http://hdl.handle.net/1843/46751
Data do documento:	27-Jan-2020
metadata.dc.url.externa:	https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.013084
metadata.dc.relation.ispartof:	Physical Review Research
Aparece nas coleções:	Artigo de Periódico

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