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US5345457A
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Dual wavelength laser system with intracavity sum frequency mixing
Assignee: Q-PEAK Inc
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Filing: 1993-10-15
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Granted: 1994-09-06
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Expires: 2013-10-15
Abstract
Abstract A dual-wavelength laser system with intracavity, sum-frequency mixing including a bifurcated resonant cavity having a first arm, a second arm and a common arm; a first laser element located in the first arm for providing a first input laser beam of a first wavelength; a second laser element located in the second arm for providing a second input laser beam of a second wavelength; a nonlinear-mixing element in the common arm; and a beam combining device for combining the first and second beams and submitting them to the nonlinear-mixing element for providing an output laser beam of a third wavelength whose energy is the sum of the energy of the input laser beams.
Inventors
- 👤 Henry H. Zenzie
- 👤 Peter F. Moulton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:45
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/10; H01S3/106; H01S3/108; H01S3/05; H01S3/06; H01S3/07; H01S3/08; H01S3/08086; H01S3/0809; H01S3/081; H01S3/0811; H01S3/082
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
112 words
A dual-wavelength laser system with intracavity, sum-frequency mixing comprising: a bifurcated resonant cavity having a first arm, a second arm and a common arm; a first laser element located in said first arm for producing a first laser beam of a first wavelength; a second laser element located in said second arm for producing a second input laser beam of a second wavelength; a nonlinear-mixing element in said common arm; and a beam combining device for combining said first and second beams and submitting them to said nonlinear-mixing element for producing an output laser beam of a third wavelength whose energy is the sum of the energy of the input laser beams.
Claim 2
Dependent Claim
112 words
A dual-wavelength laser system with intracavity, sum-frequency mixing comprising: a bifurcated resonant cavity having a first arm, a second arm and a common arm; a first laser element located in said first arm for producing a first laser beam of a first wavelength; a second laser element located in said second arm for producing a second input laser beam of a second wavelength; a nonlinear-mixing element in said common arm; and a beam combining device for combining said first and second beams and submitting them to said nonlinear-mixing element for producing an output laser beam of a third wavelength whose energy is the sum of the energy of the input laser beams.
Claim 3
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which said first laser element is a solid state element.
Claim 4
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which said second laser element is a solid state element.
Claim 5
Dependent Claim
19 words
The dual-wavelength laser system of claim 1 in which said first and second laser elements are the same material.
Claim 6
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which each of said laser elements includes a pumping device.
Claim 7
Dependent Claim
16 words
The dual-wavelength laser system of claim 5 in which each said pumping device is a flashlamp.
Claim 8
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which said first and second laser elements include infrared lasers.
Claim 9
Dependent Claim
22 words
The dual-wavelength laser system of claim 7 in which said first wavelength is 1064 nm and said second wavelength is 1318 nm.
Claim 10
Dependent Claim
17 words
The dual-wavelength laser system of claim 1 in which said nonlinear-mixing element is potassium titanyl phosphate (KTP).
Claim 11
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which said nonlinear-mixing element is lithium niobate (LiNbO 3 ).
Claim 12
Dependent Claim
16 words
The dual-wavelength laser system of claim 1 in which said nonlinear-mixing element is lithium triborate (LBO).
Claim 13
Dependent Claim
18 words
The dual-wavelength laser system of claim 1 in which said beam combining device includes a Brewster prism assembly.
Claim 14
Dependent Claim
17 words
The dual-wavelength laser system of claim 1 in which said beam combining device includes a dichroic mirror.
Claim 15
Dependent Claim
26 words
The dual-wavelength laser system of claim 1 in which said first and second beams are orthogonally polarized and said beam combining device is a polarizer element.
Claim 16
Dependent Claim
16 words
The dual-wavelength laser system of claim 14 in which said first wavelength is approximately 1064 nm.
Claim 17
Dependent Claim
16 words
The dual-wavelength laser system of claim 14 in which said second wavelength is approximately 1318 nm.
Claim 18
Dependent Claim
16 words
The dual-wavelength laser system of claim 14 in which said third wavelength is approximately 589 nm.
Claim 19
Dependent Claim
131 words
A dual-wavelength infrared laser system with intracavity, sum-frequency mixing for yellow light generation for vascular lesion removal, comprising: a bifurcated resonant cavity having a first arm, a second arm and a common arm; a first solid state H2 pfm infrared laser element located in said first arm for producing a first laser beam at approximately 1 micron; a second solid state H2 pfm infrared laser element located in said second arm for producing a second input laser beam at approximately 1.3 microns; a nonlinear-mixing element in said common arm; and a beam combining device for combining said first and second beams and submitting them to said nonlinear-mixing element for producing an output laser beam of a yellow wavelength whose energy is the sum of the energy of the input laser beams.
Claim 20
Dependent Claim
131 words
A dual-wavelength infrared laser system with intracavity, sum-frequency mixing for yellow light generation for vascular lesion removal, comprising: a bifurcated resonant cavity having a first arm, a second arm and a common arm; a first solid state H2 pfm infrared laser element located in said first arm for producing a first laser beam at approximately 1 micron; a second solid state H2 pfm infrared laser element located in said second arm for producing a second input laser beam at approximately 1.3 microns; a nonlinear-mixing element in said common arm; and a beam combining device for combining said first and second beams and submitting them to said nonlinear-mixing element for producing an output laser beam of a yellow wavelength whose energy is the sum of the energy of the input laser beams.
References Cited (Backward Citations)
US3855547A
Cited
US3967212A
Cited
US4759026A
Cited
US5060233A
Cited
US5084879A
Cited
US5142542A
Cited
US5235605A
Cited
US5144630A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-09-05 | 1998-03-07 | 1998-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-09-05 | 2002-03-07 | 2002-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-09-05 | 2006-03-07 | 2006-09-06 | $7700.00 | Window Closed / Lapsed |