WAVELENGTH CONVERSION MODULE, LASER LIGHT SOURCE DEVICE, TWO-DIMENSIONAL IMAGE DISPLAY, BACKLIGHT LIGHT SOURCE, LIQUID CRYSTAL DISPLAY AND LASER MATERIAL PROCESSING SYSTEM

摘要

A wavelength conversion module comprising a first basic wave propagation optical fiber for transmitting a basic wave emitted from a laser light source, a first wavelength conversion element coupled optically with the first basic wave propagation optical fiber and converting the basic wave exiting the first basic wave propagation optical fiber into a harmonic, and a first harmonic propagation optical fiber coupled with the first wavelength conversion element and transmitting the harmonic exiting the first wavelength conversion element, characterized in that the core diameter of the first harmonic propagation optical fiber is 0.5-0.9 times that of the first basic wave propagation optical fiber.