Patent US4224577A successfully refreshed from Google Patents.
US4224577A
Expired / Lapsed
US
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Multistaged stokes injected Raman capillary waveguide amplifier
Assignee: United States Department of Energy
•
Filing: 1978-11-03
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Granted: 1980-09-23
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Expires: 1998-11-03
Abstract
Abstract A multistaged Stokes injected Raman capillary waveguide amplifier for providing a high gain Stokes output signal. The amplifier uses a plurality of optically coupled capillary waveguide amplifiers and one or more regenerative amplifiers to increase Stokes gain to a level sufficient for power amplification. Power amplification is provided by a multifocused Raman gain cell or a large diameter capillary waveguide. An external source of CO 2 laser radiation can be injected into each of the capillary waveguide amplifier stages to increase Raman gain. Devices for injecting external sources of CO 2 radiation include: dichroic mirrors, prisms, gratings and Ge Brewster plates. Alternatively, the CO 2 input radiation to the first stage can be coupled and amplified between successive stages.
Inventors
- 👤 Norman A. Kurnit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:01
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/30; H01S3/305
Claims Analysis
Total Claims: 57
Claim 1
Independent Claim
31 words
A Stokes injected Raman waveguide amplifier using rotational states in a diatomic molecular gas comprising: a plurality of capillary waveguide amplifiers; means for optically coupling said plurality of capillary waveguide amplifiers.
Claim 2
Dependent Claim
31 words
A Stokes injected Raman waveguide amplifier using rotational states in a diatomic molecular gas comprising: a plurality of capillary waveguide amplifiers; means for optically coupling said plurality of capillary waveguide amplifiers.
Claim 3
Dependent Claim
29 words
The amplifier of claim 1 further comprising: means for injecting an external source of CO 2 laser radiation into at least one of said plurality of capillary waveguide amplifiers.
Claim 4
Dependent Claim
22 words
The amplifier of claim 2 wherein said source of CO 2 laser radiation comprises a multifrequency source of CO 2 laser radiation.
Claim 5
Dependent Claim
19 words
The amplifier of claim 1 wherein said means for optically coupling said plurality of capillary waveguide amplifiers comprises reflectors.
Claim 6
Dependent Claim
23 words
The amplifier of claim 2 wherein said means for injecting an external source of CO 2 input laser radiation comprises a dichroic mirror.
Claim 7
Dependent Claim
22 words
The amplifier of claim 2 wherein said means for injecting an external source of CO 2 input laser radiation comprises a prism.
Claim 8
Dependent Claim
22 words
The amplifier of claim 2 wherein said means for injecting an external source of CO 2 input laser radiation comprises a grating.
Claim 9
Dependent Claim
24 words
The amplifier of claim 2 wherein said means for injecting an external source of CO 2 input laser radiation comprises a Ge Brewster plate.
Claim 10
Dependent Claim
20 words
The amplifier of claim 1 wherein said plurality of capillary waveguide amplifiers comprises at least one capillary waveguide regenerative amplifier.
Claim 11
Dependent Claim
16 words
The amplifier of claim 1 wherein said plurality of capillary waveguide amplifiers have progressively larger diameters.
Claim 12
Dependent Claim
12 words
The amplifier of claim 1 further comprising a multifocus Raman gain cell.
Claim 13
Dependent Claim
32 words
The amplifier of claim 1 wherein capillary waveguides of initial stages of said plurality of capillary waveguide amplifiers are fabricated from BeO and of latter stages from Al 2 O 3 .
Claim 14
Dependent Claim
25 words
The amplifier of claim 1 further comprising CO 2 amplification means disposed to optically couple at least two of said plurality of capillary waveguide amplifiers.
Claim 15
Dependent Claim
31 words
The amplifier of claim 11 further comprising CO 2 amplification means disposed to optically couple at least one of said plurality of capillary waveguide amplifiers and said multifocus Raman gain cell.
Claim 16
Dependent Claim
85 words
A Stokes injected Raman waveguide amplifier using rotational states in a diatomic molecular gas comprising; means for generating a source of Stokes injection radiation; means for generating a source of CO 2 laser radiation; means for circularly polarizing said Stokes injection radiation and said CO 2 laser radiation in opposite circular directions; a plurality of optically coupled capillary waveguide amplifiers; means for applying said circularly polarized CO 2 laser radiation and said circularly polarized Stokes injection radiation to said plurality of optically coupled waveguide amplifiers.
Claim 17
Dependent Claim
85 words
A Stokes injected Raman waveguide amplifier using rotational states in a diatomic molecular gas comprising; means for generating a source of Stokes injection radiation; means for generating a source of CO 2 laser radiation; means for circularly polarizing said Stokes injection radiation and said CO 2 laser radiation in opposite circular directions; a plurality of optically coupled capillary waveguide amplifiers; means for applying said circularly polarized CO 2 laser radiation and said circularly polarized Stokes injection radiation to said plurality of optically coupled waveguide amplifiers.
Claim 18
Dependent Claim
29 words
The amplifier of claim 15 further comprising: means for injecting an external source of CO 2 laser radiation into at least one of said plurality of capillary waveguide amplifiers.
Claim 19
Dependent Claim
22 words
The amplifier of claim 15 wherein said source of CO 2 laser radiation comprises a multifrequency source of CO 2 laser radiation.
Claim 20
Dependent Claim
23 words
The amplifier of claim 16 wherein said means for injecting an external source of CO 2 input laser radiation comprises a dichroic mirror.
Claim 21
Dependent Claim
22 words
The amplifier of claim 16 wherein said means for injecting an external source of CO 2 input laser radiation comprises a prism.
Claim 22
Dependent Claim
22 words
The amplifier of claim 16 wherein said means for injecting an external source of CO 2 input laser radiation comprises a grating.
Claim 23
Dependent Claim
24 words
The amplifier of claim 16 wherein said means for injecting an external source of CO 2 input laser radiation comprises a Ge Brewster plate.
Claim 24
Dependent Claim
20 words
The amplifier of claim 15 wherein said plurality of capillary waveguide amplifiers comprises at least one capillary waveguide regenerative amplifier.
Claim 25
Dependent Claim
16 words
The amplifier of claim 15 wherein said plurality of capillary waveguide amplifiers have progressively larger diameters.
Claim 26
Dependent Claim
12 words
The amplifier of claim 15 further comprising a multifocus Raman gain cell.
Claim 27
Dependent Claim
32 words
The amplifier of claim 15 wherein capillary waveguides of initial stages of said plurality of capillary waveguide amplifiers are fabricated from BeO and of latter stages from A1 2 O 3 .
Claim 28
Dependent Claim
23 words
The amplifier of claim 15 further comprising at least one CO 2 amplifier disposed between said plurality of optically coupled capillary waveguide amplifiers.
Claim 29
Dependent Claim
31 words
The amplifier of claim 24 further comprising CO 2 amplification means disposed to optically couple at least one of said plurality of capillary waveguide amplifiers and said multifocus Raman gain cell.
Claim 30
Dependent Claim
82 words
A Stokes injected Raman waveguide amplifier comprising; a source of CO 2 laser radiation; a source of Stokes radiation; a plurality of optically coupled capillary waveguide amplifiers containing a Raman medium gas; means for injecting said source of CO 2 laser radiation and said source of Stokes radiation into said plurality of optically coupled capillary waveguide amplifiers to induce amplification of said Stokes radiation signal by Raman scattering of said CO 2 laser radiation by rotational states of said Raman medium gas.
Claim 31
Dependent Claim
82 words
A Stokes injected Raman waveguide amplifier comprising; a source of CO 2 laser radiation; a source of Stokes radiation; a plurality of optically coupled capillary waveguide amplifiers containing a Raman medium gas; means for injecting said source of CO 2 laser radiation and said source of Stokes radiation into said plurality of optically coupled capillary waveguide amplifiers to induce amplification of said Stokes radiation signal by Raman scattering of said CO 2 laser radiation by rotational states of said Raman medium gas.
Claim 32
Dependent Claim
22 words
The amplifier of claim 28 wherein said source of CO 2 laser radiation comprises a multifrequency source of CO 2 laser radiation.
Claim 33
Dependent Claim
29 words
The amplifier of claim 28 further comprising means for injecting an external source of CO 2 laser radiation into at least one of said plurality of capillary waveguide amplifiers.
Claim 34
Dependent Claim
23 words
The amplifier of claim 30 wherein said means for injecting an external source of CO 2 input laser radiation comprises a dichroic mirror.
Claim 35
Dependent Claim
22 words
The amplifier of claim 30 wherein said means for injecting an external source of CO 2 input laser radiation comprises a prism.
Claim 36
Dependent Claim
22 words
The amplifier of claim 30 wherein said means for injecting an external source of CO 2 input laser radiation comprises a grating.
Claim 37
Dependent Claim
24 words
The amplifier of claim 30 wherein said means for injecting an external source of CO 2 input laser radiation comprises a Ge Brewster plate.
Claim 38
Dependent Claim
20 words
The amplifier of claim 28 wherein said plurality of capillary waveguide amplifiers comprises at least one capillary waveguide regenerative amplifier.
Claim 39
Dependent Claim
16 words
The amplifier of claim 28 wherein said plurality of capillary waveguide amplifiers have progressively larger diameters.
Claim 40
Dependent Claim
12 words
The amplifier of claim 28 further comprising a multifocus Raman gain cell.
Claim 41
Dependent Claim
32 words
The amplifier of claim 28 wherein capillary waveguides of initial stages of said plurality of capillary waveguide amplifiers are fabricated from BeO and of latter stages from Al 2 O 3 .
Claim 42
Dependent Claim
26 words
The amplifier of claim 28 further comprising CO 2 amplification means for optically coupling at least two of said plurality of optically coupled capillary waveguide amplifiers.
Claim 43
Dependent Claim
31 words
The amplifier of claim 37 further comprising CO 2 amplification means disposed to optically couple at least one of said plurality of capillary waveguide amplifiers and said multifocus Raman gain cell.
Claim 44
Dependent Claim
69 words
A Raman waveguide amplifier comprising: a source of CO 2 laser radiation; a plurality of optically coupled capillary waveguide amplifiers containing a Raman medium gas; means for injecting said source of CO 2 laser radiation into said plurality of optically coupled capillary waveguide amplifiers to induce amplification of a Stokes radiation signal by Raman scattering of said CO 2 laser radiation by rotational states of said Raman medium gas.
Claim 45
Dependent Claim
69 words
A Raman waveguide amplifier comprising: a source of CO 2 laser radiation; a plurality of optically coupled capillary waveguide amplifiers containing a Raman medium gas; means for injecting said source of CO 2 laser radiation into said plurality of optically coupled capillary waveguide amplifiers to induce amplification of a Stokes radiation signal by Raman scattering of said CO 2 laser radiation by rotational states of said Raman medium gas.
Claim 46
Dependent Claim
22 words
The amplifier of claim 41 wherein said source of CO 2 laser radiation comprises a multifrequency source of CO 2 laser radiation.
Claim 47
Dependent Claim
29 words
The amplifier of claim 41 further comprising means for injecting an external source of CO 2 laser radiation into at least one of said plurality of capillary waveguide amplifiers.
Claim 48
Dependent Claim
23 words
The amplifier of claim 43 wherein said means for injecting an external source of CO 2 input laser radiation comprises a dichroic mirror.
Claim 49
Dependent Claim
22 words
The amplifier of claim 43 wherein said means for injecting an external source of CO 2 input laser radiation comprises a prism.
Claim 50
Dependent Claim
22 words
The amplifier of claim 43 wherein said means for injecting an external source of CO 2 input laser radiation comprises a grating.
Claim 51
Dependent Claim
24 words
The amplifier of claim 43 wherein said means for injecting an external source of CO 2 input laser radiation comprises a Ge Brewster plate.
Claim 52
Dependent Claim
20 words
The amplifier of claim 41 wherein said plurality of capillary waveguide amplifiers comprises at least one capillary waveguide regenerative amplifier.
Claim 53
Dependent Claim
16 words
The amplifier of claim 41 wherein said plurality of capillary waveguide amplifiers have progressively larger diameters.
Claim 54
Dependent Claim
12 words
The amplifier of claim 41 further comprising a multifocus Raman gain cell.
Claim 55
Dependent Claim
32 words
The amplifier of claim 41 wherein capillary waveguides of initial stages of said plurality of capillary waveguide amplifiers are fabricated from BeO and of latter stages from Al 2 O 3 .
Claim 56
Dependent Claim
26 words
The amplifier of claim 41 further comprising CO 2 amplification means for optically coupling at least two of said plurality of optically coupled capillary waveguide amplifiers.
Claim 57
Dependent Claim
31 words
The amplifier of claim 50 further comprising CO 2 amplification means disposed to optically couple at least one of said plurality of capillary waveguide amplifiers and said multifocus Raman gain cell.
References Cited (Backward Citations)
US4095121A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-23 | 1984-03-24 | 1984-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-23 | 1988-03-24 | 1988-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-23 | 1992-03-24 | 1992-09-23 | $7700.00 | Window Closed / Lapsed |