Open AccessDomain-Reversed Lithium Niobate Single-Crystal Fibers are Potentially for Efficient Terahertz Wave Generation
Author(s) -
Yalin Lu,
Kitt Reinhardt
Publication year - 2008
Publication title -
advances in optoelectronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.118
H-Index - 21
eISSN - 1687-5648
pISSN - 1687-563X
DOI - 10.1155/2008/208458
Subject(s) - lithium niobate , poling , terahertz radiation , microscope , materials science , optics , nonlinear optics , quasi phase matching , domain (mathematical analysis) , optoelectronics , optical fiber , laser , physics , ferroelectricity , mathematics , dielectric , mathematical analysis
Nonlinear frequency conversion remains one of the dominant approaches to efficiently generate THz waves. Significant material absorption in the THz range is the main factor impeding the progress towards this direction. In this research, a new multicladding nonlinear fiber design was proposed to solve this problem, and as the major experimental effort, periodic domain structure was introduced into lithium niobate single-crystal fibers by electrical poling. The introduced periodic domain structures were nondestructively revealed using a crossly polarized optical microscope and a confocal scanning optical microscope for quality assurance