Patent JPS6148148A successfully refreshed from Google Patents.
US4334200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laser induced collisional laser pumping
Assignee: AT&T Inc
•
Filing: 1980-05-01
•
Granted: 1982-06-08
•
Expires: 2000-05-01
Abstract
Abstract A laser apparatus for inverting a population in an atomic or molecular species is provided. Energy is stored in a first species and a laser induced collisional energy transfer from that first species to a selected dissociative molecular state of a second species causes an inversion of one of the constituents of the second species. This is represented, in one embodiment of the present invention which utilizes a second species comprising a diatomic molecule, by the reaction A*+BC+hν→A+(BC)*→A+B*+C, where A and A* are the ground and excited states of the first species respectively, denoted as the storage species, BC and (BC)* are the ground and excited states of the second species respectively, which comprises atoms B and C, and B* is the excited state of atom B, which excited state is inverted.
Inventors
- 👤 Richard R. Freeman
- 👤 Jonathan C. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:40
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/095; H01S3/09505; H01S3/097
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
108 words
An apparatus comprising: a chamber; a storage species and a second species disposed in said chamber, said second species being a molecular material; excitation means for exciting said storage species; characterized in that said apparatus further includes a laser source of laser radiation and means for applying said laser radiation to said storage species and said second species in said chamber, whereby said second species is excited to a higher state by a laser-induced collisional energy transfer interaction between said excited storage species and said second species and said higher state is a dissociative molecular state, whereupon said second species decays into a first and a second fragment.
Claim 2
Independent Claim
108 words
An apparatus comprising: a chamber; a storage species and a second species disposed in said chamber, said second species being a molecular material; excitation means for exciting said storage species; characterized in that said apparatus further includes a laser source of laser radiation and means for applying said laser radiation to said storage species and said second species in said chamber, whereby said second species is excited to a higher state by a laser-induced collisional energy transfer interaction between said excited storage species and said second species and said higher state is a dissociative molecular state, whereupon said second species decays into a first and a second fragment.
Claim 3
Dependent Claim
44 words
A laser apparatus in accordance with claim 1 wherein said chamber is a laser cavity and at least one of said first or second fragments is excited to or decays to the upper level of a laser transition of said first or second fragment.
Claim 4
Dependent Claim
22 words
A laser apparatus in accordance with claim 2 wherein said excitation means for exciting said storage species is a second laser source.
Claim 5
Dependent Claim
21 words
A laser apparatus in accordance with claim 3 wherein said storage species is H 2 and said second species is HD.
Claim 6
Dependent Claim
33 words
A laser apparatus in accordance with claim 4 wherein said second laser source is an ArF excimer laser for producing laser radiation substantially at 1930 A, which radiation excites said H 2 .
Claim 7
Dependent Claim
21 words
A laser apparatus in accordance with claim 5 wherein said laser source provides tunable radiation in the vicinity of 6650 A.
Claim 8
Dependent Claim
21 words
A laser apparatus in accordance with claim 3 wherein said storage species is Kr and said second species is a HI.
Claim 9
Dependent Claim
39 words
A laser apparatus in accordance with claim 7 wherein said second laser source is an ArF excimer laser source for producing laser radiation substantially at 1930 A and said laser source provides radiation in the range of 5-6 μm.
Claim 10
Dependent Claim
17 words
A laser apparatus in accordance with claim 8 wherein said laser source is a CO molecular laser.
Claim 11
Dependent Claim
20 words
A laser apparatus in accordance with claim 3 wherein said storage species is Xe and said second species is HCl.
Claim 12
Dependent Claim
20 words
A laser apparatus in accordance with claim 3 wherein said storage species is Xe and said second species is HBr.
Claim 13
Dependent Claim
21 words
A laser apparatus in accordance with claim 2 wherein said excitation means for exciting said storage species is an electric discharge.
Claim 14
Dependent Claim
21 words
A laser apparatus in accordance with claim 2 wherein excitation means for exciting said storage species is an electron beam source.
Claim 15
Independent Claim
116 words
A method of providing a laser transition which comprises the steps of: exciting a storage species, which storage species is disposed in a laser cavity; applying laser radiation to said storage species and a second species, which second species is disposed in said laser cavity, whereby energy is transferred to said second species from said storage species by a laser induced collision, said energy transfer being sufficient to excite said second species to a dissociative molecular state, which dissociative state decays into a first and second fragment, which at least one of said first or second fragments is excited to or decays to the upper level of a laser transition of said first or second fragment.
Claim 16
Independent Claim
116 words
A method of providing a laser transition which comprises the steps of: exciting a storage species, which storage species is disposed in a laser cavity; applying laser radiation to said storage species and a second species, which second species is disposed in said laser cavity, whereby energy is transferred to said second species from said storage species by a laser induced collision, said energy transfer being sufficient to excite said second species to a dissociative molecular state, which dissociative state decays into a first and second fragment, which at least one of said first or second fragments is excited to or decays to the upper level of a laser transition of said first or second fragment.
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) | 1985-06-07 | 1985-12-07 | 1986-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-07 | 1989-12-07 | 1990-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-07 | 1993-12-07 | 1994-06-08 | $7700.00 | Window Closed / Lapsed |