U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Green welding laser

Patent 7088749 Issued on August 8, 2006. Estimated Expiration Date: Icon_subject January 6, 2023. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Frequency doubling a Q-switched laser beam by using intracavity Type II phase matching
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Intra-cavity beam relay for optical harmonic generation
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Bonding metal electrical members with a frequency doubled pulsed laser beam
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Signal-resonant intracavity optical frequency mixing
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Inventor: Dixon

Laser apparatus
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Issued on: 01/05/1993
Inventor: Kobayashi, et al.

Frequency-doubling solid state laser
Patent #: 5268913
Issued on: 12/07/1993
Inventor: Sakowski, et al.

Synchronously pumped sub-picosecond optical parametric oscillator
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Output waveform control device
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Inventor: Enokizono, et al.

Diode pumped, multi axial mode intracavity doubled laser
Patent #: 5638388
Issued on: 06/10/1997
Inventor: Nighan, Jr., et al.

Intracavity modulated pulsed laser and methods of using the same
Patent #: 5832013
Issued on: 11/03/1998
Inventor: Yessik, et al.

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Inventors

Assignee

Application

No. 10337110 filed on 01/06/2003

US Classes:

372/22, Frequency multiplying (e.g., harmonic generator)372/28, Frequency372/21, Nonlinear device219/121.64, Methods359/330, Parametric oscillator372/26, Modulation372/23, Producing plural wavelength output372/10, Q-switch372/25, Control of pulse characteristics372/75, Semiconductor606/3, With particular wavelength606/10, Systems345/84, Light-controlling display elements372/41, Insulating crystal385/10, Diffraction grating (e.g., Bragg)438/200And additional electrical device

Examiners

Primary: Tran, Thuy Vinh
Assistant: Vy, Hung Tran

Attorney, Agent or Firm

Foreign Patent References

  • 42 28 862 DE 03/01/1994

International Class

H01S 3/10

Abstract

A harmonic system for use with metals and alloys such as titanium, steel, copper, gold, aluminum, etc. is disclosed. The harmonic laser system includes an oscillator cavity having a first end mirror and a harmonic separator mirror, an active medium positioned in the oscillator cavity, an electro-optic pump device for optically pumping the active medium to produce a first optical beam at a fundamental wavelength and a non-linear optical crystal positioned in the oscillator cavity to generate a second optical beam at a harmonic wavelength of the first optical beam, wherein the harmonic separator mirror outputs the second optical beam and reflects the first optical beam.

Other References

  • Konno S et al: “Efficient High-Power Green Beam Generation by Use of an Intracavity Frequency-Doubled Laser-Diode-Pumped Q-Switched ND:YAG Laser.” Applied Optics, Optical Society of America, Washington, US, vol. 37, No. 3, Jan. 20, 1998, pp. 551-554, XP000733906, ISSN: 0003-6935.
  • EP Search Report for European Patent Application No. EP 03090458.5 mailed Feb. 4, 2005.
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