WAVELENGTH CONVERSION ELEMENT

摘要

The invention relates to a wavelength conversion element using a non-linear optical crystal and has the object of preventing the conversion optical output from the wavelength conversion element from becoming unstable. Wavelength conversion elements (1A, 1B) for converting reference light (A) into light (B) of other wavelength are provided. The elements (1A, 1B) are composed of plate-like bodies of non-linear optical crystal, and comprise wavelength conversion layers (2) each having one main surface (2a) and the other main surface (2b),and support bodies (3, 3A) each joined to one main surface (2a) of the wavelength conversion layer (2). Another support body (3B) may be joined to the other main surface (2b) of the wavelength conversion layer (2).