Compact, highly efficient and rugged UV source based on fiber laser
OwnerJin U. Kanginventor
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Abstract
A tunable highly efficient and high power ultraviolet (UV) laser source with good spatial beam quality is disclosed. A plurality of laser lights are generated by ytterbium (Yb) doped fiber laser and erbium/ytterbium (Er/Yb) doped fiber laser. In order to achieve a desired UV wavelength, the Yb-doped and Er/Yb-doped fiber lasers are tuned to generate laser lights of certain wavelengths based on a desired UV light wavelength. The laser lights from the Er/Yb-doped fiber laser and the Yb-doped fiber laser are frequency-doubled. The frequency-doubled laser lights are non-linearly frequency-mixed to generate a UV light with the desired wavelength.
Claims27
An ultraviolet (UV) light generator comprising:
- a plurality of fiber lasers, each fiber laser generating a laser light, wherein each laser light has a wavelength predetermined based on a desired UV light wavelength;
- a frequency-multiplying unit for generating a plurality of harmonic lights by frequency-multiplying each of said plurality of laser lights;
- and
- a non-linear frequency mixer for combining wavelengths of said plurality of harmonic lights to generate a UV light with the desired UV light wavelength.
A ultraviolet (UV) light generator comprising:
- a plurality of fiber lasers, each fiber laser generating one or more laser lights, wherein each laser light has a wavelength predetermined based on desired UV light wavelengths;
- a frequency-multiplying unit for generating harmonic lights of each laser light;
- and
- a non-linear frequency mixing unit for selectively combining wavelengths of said plurality of harmonic lights to generate one or more UV lights with the desired UV light wavelengths.
A method for generating a ultraviolet (UV) light, comprising the steps of:
- generating a plurality of laser lights by using fiber lasers, wherein a wavelength of each laser lights is predetermined based on a desired UV light wavelength;
- frequency-multiplying said plurality of laser lights to generate a plurality of harmonic lights of said plurality of laser lights;
- non-linear frequency-mixing said plurality of harmonic lights;
- and
- focusing said plurality of frequency-mixed harmonic lights to generate a UV light having the desired UV light wavelength.
Dependencies are inferred from the claim text.