Laser light source, image display apparatus, and processing apparatus

A laser light source, comprising:

• a fundamental laser generator for generating a fundamental laser light;
• a wavelength conversion element having formed therein a periodically poled structure, for converting the fundamental laser light into a laser light having a different wavelength, said wavelength conversion element being made of a ferroelectric crystal;
• a holding member for holding at least a part of an element surface of said wavelength conversion element, said element surface crossing a polarization direction of the periodically poled structure;
• and
• an insulation layer provided between the holding member and the element surface,
• wherein the insulation layer has an electric resistivity of not less than 1×108 Ω·cm.