Journal
JAPANESE JOURNAL OF APPLIED PHYSICS
Volume 53, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/JJAP.53.062201
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- Ministry of Trade, Industry and Energy (MOTIE) [2010-GU-TD-200408-001]
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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. (C) 2014 The Japan Society of Applied Physics
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