Efficient quasi-phase-matched second harmonic generation using ferroelastically induced periodic ferroelectric domains in $RbTiOAsO_4$ crystals

$RbTiOAsO_4$ 결정의 주기적인 강탄성-강유전 다분역 구조를 이용한 효율적인 준위상 정합 이차 조화파 발생

Quasi-phase-match (QPM) can be realized by means of one-dimensional spatial modulation of second-order nonlinear susceptibility and has advantages over the conventional bulk phase-matching method because QPM can not only utilize the largest component of second-order nonlinear susceptibility tensor, but also can circumvent walk-off effect. (omitted)