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Mohammad Abolhassani

Mohammad Abolhassani

Academic rank: Associate Professor
ORCID: https://orcid.org/0000-0001-6112-0709
Education: PhD.
ScopusId: 16174353100
Faculty: Science
Address: Arak University
Phone:

Research

Title
Investigation of high reflectivity optical phase-conjugation in BaTiO3
Type
Presentation
Keywords
Photorefractive effect, phase conjugate mirror,BaTiO3 crystal, degenerate four wave mixing
Year
2008
Researchers Mohammadhosain Majles Ara ، Seyed Rouhollah Hosseini ، Mohammad Abolhassani

Abstract

In this paper we present optical phase-conjugation based on the degenerate four-wave mixing (DFWM) arrangement in photo refractive crystal. The 532nm beam from a low-power Nd:Yag laser was split to form two counter-propagating pump beams and one probe beam in the DFWM geometry. Experiments were carried out by varying the parameters (angle of separation between the forward-pump and the probe beam, writing beam intensities) that influence the phase conjugate beam reflectivity. High reflectivity optical phase-conjugation is hereby reported for low-power lasers. The dependence of phase conjugate reflectivity on signal to pump ratio (m) and forward to backward pump ratio (q) have been investigated experimentally.