| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing method for a wavelength conversion element capable of improving transmittance. SOLUTION: A manufacturing method 10d for a wavelength conversion element comprises, in sequence: a step of growing a first crystal 11; and a step of growing a second crystal which is an amorphous crystal 16 of which refractive index is not different from that of the first crystal 11 substantially, on a surface of the first crystal 11. Polarization reversal structure in which polarization directions of the first and second crystals 11, 16 are periodically reversed along an optical waveguide 13 is formed, and the first and second crystals 11, 16 are formed so that the polarization reversal structure satisfies pseudo phase matching condition relative to incident light. COPYRIGHT: (C)2012,JPO&INPIT
|
