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US5020061A
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Free electron laser with a gaseous medium wiggler and method to use this laser
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1990-07-24
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Granted: 1991-05-28
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Expires: 2010-07-24
Abstract
Abstract Free electrons laser with gaseous medium wiggler and method to use this laser. The laser includes a chamber (22) designed to be traversed by a beam of previously accelerated electrons, a wiggler (44) which creates in this chamber a periodic magnetic field interacting with the beam of electrons, and means (54) to fill the chamber with a gas formed of atoms or molecules having at least one resonance line at a determined frequency. The laser is tuned on this resonance line, which enables the laser to produce a frequency light close to this determined frequency.
Inventors
- 👤 Claude Etievant
- 👤 Hans Wilhelmsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:43
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/09; H01S3/0903
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A free electron laser including: a principal chamber traversed by a beam of previously accelerated electrons, a wiggler which generates in this principal chamber a periodic magnetic field interacting with the beam of electrons, and means to fill the principal chamber with a gas formed of atoms or molecules having at least one resonance line at a determined frequency, wherein said laser further includes means to tune the laser to this resonance line, thereby enabling the laser to produce a light whose frequency is close to said determined frequency.
Claim 2
Dependent Claim
89 words
A free electron laser including: a principal chamber traversed by a beam of previously accelerated electrons, a wiggler which generates in this principal chamber a periodic magnetic field interacting with the beam of electrons, and means to fill the principal chamber with a gas formed of atoms or molecules having at least one resonance line at a determined frequency, wherein said laser further includes means to tune the laser to this resonance line, thereby enabling the laser to produce a light whose frequency is close to said determined frequency.
Claim 3
Dependent Claim
29 words
A free electron laser according to claim 1, wherein the means to fill the principal chamber include means for the controlled feeding of this principal chamber with said gas.
Claim 4
Dependent Claim
21 words
A free electron laser according to claim 2, wherein the principal chamber is fed with gas at one of its extremities.
Claim 5
Dependent Claim
40 words
A free electron laser according to claim 1, wherein, with the beam of electrons originating from an electron accelerator, the laser further includes a differential pumping chamber which connects the principal chamber to a pipe forming part of the accelerator.
Claim 6
Dependent Claim
26 words
A free electron laser according to claim 1, wherein it further includes means for recovering the beam of electrons after it has left the principal chamber.
Claim 7
Dependent Claim
30 words
A free electron laser according to claim 5, wherein it further includes another differential pumping chamber which connects the principal chamber to the means for recovering the beam of electrons.
Claim 8
Independent Claim
92 words
A method for use of a free electron laser including: a principal chamber traversed by a beam of previously accelerated electrons, and a wiggler which generates in this principal chamber a periodic magnetic field interacting with the beam of electrons, a method by which the principal chamber is filled with a gas formed of atoms or molecules having at least one resonance line at a determined frequency, wherein the laser is tuned on this resonance line, thereby enabling the laser to produce a light where frequency is close to said determined frequency.
Claim 9
Independent Claim
92 words
A method for use of a free electron laser including: a principal chamber traversed by a beam of previously accelerated electrons, and a wiggler which generates in this principal chamber a periodic magnetic field interacting with the beam of electrons, a method by which the principal chamber is filled with a gas formed of atoms or molecules having at least one resonance line at a determined frequency, wherein the laser is tuned on this resonance line, thereby enabling the laser to produce a light where frequency is close to said determined frequency.
Claim 10
Dependent Claim
46 words
Method according to claim 7, wherein the laser is approximately tuned on the wavelength corresponding to the maximum of the curve representing the variations of (nr-1) according to the wavelength in the vicinity of resonance, where nr is the real part of the gas refraction index.
References Cited (Backward Citations)
US4466101A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-05-27 | 1994-11-26 | 1995-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-05-27 | 1998-11-26 | 1999-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-05-27 | 2002-11-26 | 2003-05-28 | $7700.00 | Window Closed / Lapsed |