Universität zu Köln

Leo, Naemi ORCID: 0000-0002-0828-6889, Meier, Dennis, Becker, Petra, Bohaty, Ladislav and Fiebig, Manfred (2015). Magnetically driven second-harmonic generation with phase matching in MnWO4. Opt. Express, 23 (21). S. 27700 - 27707. WASHINGTON: OPTICAL SOC AMER. ISSN 1094-4087

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Abstract

Phase matching is known to enhance the nonlinear optical response in materials with a non-centrosymmetric crystallographic or electronic structure. In contrast, phase-matched frequency doubling driven by non-centrosymmetric magnetism that induces acentricity in otherwise centrosymmetric structures has not been reported yet. In our study we demonstrate the emergence of magnetically driven second-harmonic generation (SHG) with phase matching in MnWO4. The phase-matched wavelength for SHG can be tuned continuously between 450 nm to 630 nm with the conversion efficiency being determined by the refractive indices and their dispersion. Our findings reveal a new strategy towards magnetismbased conversion-materials and a route for controlling the nonlinear signal yield by acting primarily on the material's spin degree of freedom rather than employing its electronic or structural properties. (C) 2015 Optical Society of America

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Leo, Naemi UNSPECIFIED orcid.org/0000-0002-0828-6889 UNSPECIFIED Meier, Dennis UNSPECIFIED UNSPECIFIED UNSPECIFIED Becker, Petra UNSPECIFIED UNSPECIFIED UNSPECIFIED Bohaty, Ladislav UNSPECIFIED UNSPECIFIED UNSPECIFIED Fiebig, Manfred UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-389585
DOI:	10.1364/OE.23.027700
Journal or Publication Title:	Opt. Express
Volume:	23
Number:	21
Page Range:	S. 27700 - 27707
Date:	2015
Publisher:	OPTICAL SOC AMER
Place of Publication:	WASHINGTON
ISSN:	1094-4087
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language CRYSTAL-STRUCTURE; TEMPERATURE; ANGLE Multiple languages Optics Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/38958