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US 5,295,143 AGranted
Three color laser
AssigneeExcel/Quantronix, Inc.
InventorsRama Rao, Victor Garkavy, Max W. Eagleson, Richard C. Sam
Life of this patent
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Abstract
A three color laser system employs a diode pumped Nd:YAG or Nd:YLF laser to provide a green output beam and to pump two Ti:S lasers. One Ti:S laser emits a tunable red beam, while the second emits a near infrared beam. The near infrared beam is frequency doubled by a NLO device to provide a tunable blue output beam. The beams may be directed to separate optical fibers or to a single fiber. A reversed Cassegrainian mirror arrangement is used to combine a plurality of beams for transmission in a single optical fiber.
Claims16
Apparatus for producing three-color laser output, comprising:
- first means for producing a first beam of coherent light in the infrared wavelength range;
- second means for frequency doubling a fractional amount, up to one hundred percent, of the first beam to produce a second beam of coherent light in the visible wavelength range;
- third means for directing a fractional amount of the second beam out of the apparatus as a first output beam having a first output beam wavelength in the visible wavelength range;
- fourth means for using a fractional amount of one of said first and second beams to produce a second output beam for direction out of the apparatus, the second output beam having a second output beam wavelength in the visible wavelength range;
- and
- fifth means for using a fractional amount of the second beam to produce a third output beam for direction out of the apparatus, the third output beam having a third output beam wavelength in the visible wavelength range.
3 more elements
Dependencies are inferred from the claim text.