Patent US4063190A successfully refreshed from Google Patents.
US4063190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
CO2 laser
Assignee: Energy Research and Development Administration ERDA
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Filing: 1975-12-30
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Granted: 1977-12-13
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Expires: 1995-12-30
Abstract
Abstract The disclosure relates to a pulsed gas laser comprising an optical resonant cavity, a CO 2 lasing medium, structure for containing the CO 2 lasing medium within the optical cavity and a device for causing a population inversion in the lasing medium, with a novel improvement comprising structure for causing a laser pulse comprising a wavelength in the near 14 μm and near 16 μm range. The structure for cooling the CO 2 lasing medium to less than about -40° C as well is a structure for pumping the maximum inversion of CO 2 molecules within the lasing medium by minimizing the population in the 010 level.
Inventors
- 👤 John P. Rink
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:20
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/04; H01S3/041; H01S3/14; H01S3/22; H01S3/223; H01S3/2232
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
94 words
In a pulsed gas laser comprising an optical resonant cavity, a Co 2 lasing medium, means for comprising said CO 2 lasing medium within said optical cavity, and means for causing a population inversion in said lasing medium, an improvement comprising: means for cooling the CO 2 lasers as to lower the number of CO 2 molecules already at the 010 level to obtain an inversion between the 100 and 010 energy levels and the 010 energy levels to provide a laser pulse comprising a wavelength of about 14 μm and about 16 μm.
Claim 2
Dependent Claim
94 words
In a pulsed gas laser comprising an optical resonant cavity, a Co 2 lasing medium, means for comprising said CO 2 lasing medium within said optical cavity, and means for causing a population inversion in said lasing medium, an improvement comprising: means for cooling the CO 2 lasers as to lower the number of CO 2 molecules already at the 010 level to obtain an inversion between the 100 and 010 energy levels and the 010 energy levels to provide a laser pulse comprising a wavelength of about 14 μm and about 16 μm.
Claim 3
Dependent Claim
17 words
The invention of claim 1 wherein said cooling means comprises means for cooling to approximately -40° C.
Claim 4
Independent Claim
108 words
A device for producing near 14 and near 16 μm radiation in a Co 2 gas laser comprising: means for cooling said CO 2 gas to decrease the number of molecules in the 010 energy state in said CO 2 gas; means for increasing the number of molecules of said CO 2 gas in the 020 and 100 energy states; means for tuning said laser cavity to transmit both 9.4 to 10.6 μm wavelength radiation and near 14 μm and near 16 μm wavelength radiation; whereby vibration inversion from said 020 and 100 to said 010 level is enhanced to produce near 14 and near 16 μm radiation.
Claim 5
Independent Claim
108 words
A device for producing near 14 and near 16 μm radiation in a Co 2 gas laser comprising: means for cooling said CO 2 gas to decrease the number of molecules in the 010 energy state in said CO 2 gas; means for increasing the number of molecules of said CO 2 gas in the 020 and 100 energy states; means for tuning said laser cavity to transmit both 9.4 to 10.6 μm wavelength radiation and near 14 μm and near 16 μm wavelength radiation; whereby vibration inversion from said 020 and 100 to said 010 level is enhanced to produce near 14 and near 16 μm radiation.
Claim 6
Dependent Claim
64 words
The device of claim 3 wherein said means for increasing said number of molecules in said 020 and 100 states comprises means for fast pumping said CO 2 gas to increase population of said 001 state and consequently increasing population of said 100 and 020 states as a result of the emission of 10.6 μm and 9.4 μm wavelength radiation, respectively, from said cavity.
Claim 7
Dependent Claim
29 words
The device of claim 3 wherein said means for tuning comprises a dichroic coupler tuned to 9.4 and 10.6 μm and near 14 and near 16 μm wavelength radiation.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |