Wavelength converting devices

Abstract

A wavelength converting substrate 1 is made of a Z plate of a ferroelectric single crystal, and includes a periodic domain inversion structure 2 formed therein, an incident face 1c of a fundamental wave 15, an emitting face 1d of a wavelength converted light, a +Z face 1a and a −Z face 1b. A wavelength converting device 20A has the substrate 1, a first conductive layer 6A formed to contact the +Z face 1a of the substrate 1, and a second conductive layer 6B formed to contact the −Z face 1b of the substrate 1.

Dependencies are inferred from the claim text.