Patent US4367554A successfully refreshed from Google Patents.
US4367554A
Expired / Lapsed
US
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High pressure, high power, compact laser
Assignee: Individual
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Filing: 1980-10-08
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Granted: 1983-01-04
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Expires: 2000-10-08
Abstract
Abstract A high pressure, high power, compact laser fabricated from a block of material which is highly transparent at the wavelength of operation. The transmitting block contains a multiplicity of channels along the longitudinal axes thereof, each channel being of such a minute cross-section that a laser medium located within each channel is incapable of independently sustaining a lasing action in a waveguide mode of operation. The multiplicity of channels, in combination, provide sufficient gain for a laser mode propagating within the transmitting material and totality of channels thereby providing an extremely large output from a laser having a minimal cross-sectional configuration.
Inventors
- 👤 Howard R. Schlossberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:40
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/097; H01S3/0975; H01S3/02; H01S3/03
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A high pressure, high power, compact laser comprising at least two elongated channels formed along the longitudinal axes of a body of material highly transparent at the wavelength of operation, wherein each of said channels is incapable of independently sustaining a lasing action within each channel in a waveguide mode of operation, each of said channels being of a predetermined cross-section, means located at each end of said body for forming a resonant cavity therebetween, a gas lasing medium contained within each of said channels, and a means for initiating sufficient gain for a laser mode in the combination of said channels and said highly transparent body such that a high power, coherent output of electromagnetic radiation at said operating wavelength through one of said means at an end of said body.
Claim 2
Dependent Claim
132 words
A high pressure, high power, compact laser comprising at least two elongated channels formed along the longitudinal axes of a body of material highly transparent at the wavelength of operation, wherein each of said channels is incapable of independently sustaining a lasing action within each channel in a waveguide mode of operation, each of said channels being of a predetermined cross-section, means located at each end of said body for forming a resonant cavity therebetween, a gas lasing medium contained within each of said channels, and a means for initiating sufficient gain for a laser mode in the combination of said channels and said highly transparent body such that a high power, coherent output of electromagnetic radiation at said operating wavelength through one of said means at an end of said body.
Claim 3
Dependent Claim
70 words
A high pressure, high power, compact laser as defined in claim 1 wherein said body has a predetermined length and a square cross-section and wherein said channels are all located within a cross-sectional dimension of one free space mode, said free space mode being defined by the expression a 2 /Lλ≈1 where a=one half the size of a side of said cross-section, L=length of said body and λ=said operating wavelength.
Claim 4
Dependent Claim
30 words
A high pressure, high power, compact laser as defined in claim 1 wherein said means for initiating said lasing action is in the form of a high frequency transverse discharge.
Claim 5
Dependent Claim
30 words
A high pressure, high power, compact laser as defined in claim 3 wherein said body is made of a solid block of said material and said channels are formed therein.
Claim 6
Dependent Claim
42 words
A high pressure, high power, compact laser as defined in claim 4 wherein each of said channels have a circular cross-section of the same diameter and the centers thereof are spaced apart from each other approximately twice said diameter of said cross-section.
Claim 7
Dependent Claim
71 words
A high pressure, high power, compact laser as defined in claim 5 wherein said body has a predetermined length and a square cross-section, and wherein said said channels are all located within a cross-sectional dimension of one free space mode, said free space mode being defined by the expression a 2 /Lλ≈1 where a=one half the size of a side of said cross-section, L=length of said body and λ=said operating wavelength.
Claim 8
Dependent Claim
58 words
A high pressure, high power, compact laser as defined in claim 6 wherein said lasing action initiating means comprises a pair of electrodes located on opposite sides of said body parallel to the longitudinal axes of said body and a coupling circuit electrically connected to said pair of electrodes in order to apply excitation voltage between said electrodes.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-01-03 | 1986-07-05 | 1987-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-01-03 | 1990-07-05 | 1991-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-01-03 | 1994-07-05 | 1995-01-04 | $7700.00 | Window Closed / Lapsed |