LIGHT-GENERATING APPARATUS WITH BROADBAND PUMPING LASER AND QUASI-PHASE MATCHING WAVEGUIDE

摘要

A light-generating apparatus comprises a broadband pumping laser configured to emit a broadband pumping light having a bandwidth larger than 10 nanometers and a broadband wavelength-converting device. The broadband wavelength-converting device includes a domain-inverted structure configured to convert the broadband pumping light into at least one conversion light by using at least a sum frequency generation mechanism and at least one waveguide positioned in the domain-inverted structure, and the waveguide has an input end configured to receive the broadband pumping light and an output end configured to output the conversion light. Since the light-generating apparatus uses the broadband pumping laser and the broadband wavelength-converting device, it is temperature-insensitive and speckle-free.