Patent ID: 8743922

Claim:
A laser light source for providing ultraviolet light, comprising: a semiconductor laser device configured to emit visible light having a wavelength between 400 nm and 560 nm; and a frequency doubling waveguide including a single crystal thin-film, the waveguide optically coupled to the semiconductor laser device to receive the visible light emitted therefrom, the frequency doubling waveguide configured to convert at least a portion of the received light into ultraviolet light having a wavelength between 200 nm and 280 nm, wherein the waveguide comprises: a frequency doubling region including a single crystal non-linear optical material; a first cladding layer arranged on the single-crystal non-linear material and comprising material substantially transparent to light having wavelengths of visible and ultraviolet laser light beams; a supporting substrate; and an adhesive layer attaching the first cladding layer to the supporting substrate.