Spatial mode behavior of second harmonic generation in a ridge-type waveguide with a periodically poled MgO-doped lithium niobate crystal

We report on spatial mode behavior of the second harmonic (SH) generated by nonlinear interaction in the a z-cut Mg-doped periodically poled LiNbO3 (MgO:PPLN) ridge-type waveguide. Specific SH modes were selectively generated by mode mixing of the fundamental harmonic (FH) waves. In addition, high-o...

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Bibliographic Details
Published in:	Japanese Journal of Applied Physics Vol. 53; no. 6; pp. 62201 - 1-062201-5
Main Authors:	Park, Jun-Hee, Kang, Tai-Young, Ha, Jeong-Ho, Lee, Han-Young
Format:	Journal Article
Language:	English
Published:	The Japan Society of Applied Physics 01-06-2014
Subjects:	Crystals Harmonics Lithium niobates Magnesium Matching Nonlinearity Second harmonic generation Temperature control Waveguides
Online Access:	Get full text
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Summary:	We report on spatial mode behavior of the second harmonic (SH) generated by nonlinear interaction in the a z-cut Mg-doped periodically poled LiNbO3 (MgO:PPLN) ridge-type waveguide. Specific SH modes were selectively generated by mode mixing of the fundamental harmonic (FH) waves. In addition, high-order SH modes TM10 and TM01 were simultaneously generated under similar phase-matching conditions in a quasi-phase matching (QPM) grating structure. The interfered mode profiles of high-order SH modes demonstrated specific mode distribution to have a diagonal angle and the Laguerre-Gaussian (LG) mode at a certain phase-matching condition obtained by temperature control.
Bibliography:	ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23
ISSN:	0021-4922 1347-4065
DOI:	10.7567/JJAP.53.062201