US4152673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas discharge laser
Assignee: US Philips Corp
•
Filing: 1978-06-12
•
Granted: 1979-05-01
•
Expires: 1998-06-12
Abstract
Abstract A gas discharge laser in which the light beam emanating from said laser is linearly polarized by applying a transverse magnetic field in which reflectors are used which are more or less anisotropic and the anisotropy axes of which have a precise orientation relative to the magnetic field so that a high degree of polarization is obtained.
Inventors
- 👤 Robertus A. J. Keijser
- 👤 Bram J. Derksema
- 👤 Leendert Vriens
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:30
CPC Classifications
H; H01; H01S; H01S3/00; H01S3/02; H01S3/03; H01S3/034; H01S3/05; H01S3/08; H01S3/08059; H01S3/10; H01S3/102; H01S3/104; H01S3/10061
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
120 words
A gas discharge laser which comprises: a discharge tube forming a laser tube, a reflector disposed proximate to each end of said discharge tube, means for linearly polarizing a light beam emanating from the gas discharge laser, said polarizing means generating a transverse magnetic field having a direction which is substantially normal to the axis of said laser tube, said means including a magnetic proximate to said laser tube, each of said reflectors having two anisotropic optical axes disposed in perpendicular relationship with one axis of one reflector being substantially parallel to one axis of the other reflector, the direction of the magnetic field produced by said magnet being substantially coincident with one of the anisotropy axes of said reflectors.
Claim 2
Dependent Claim
120 words
A gas discharge laser which comprises: a discharge tube forming a laser tube, a reflector disposed proximate to each end of said discharge tube, means for linearly polarizing a light beam emanating from the gas discharge laser, said polarizing means generating a transverse magnetic field having a direction which is substantially normal to the axis of said laser tube, said means including a magnetic proximate to said laser tube, each of said reflectors having two anisotropic optical axes disposed in perpendicular relationship with one axis of one reflector being substantially parallel to one axis of the other reflector, the direction of the magnetic field produced by said magnet being substantially coincident with one of the anisotropy axes of said reflectors.
Claim 3
Dependent Claim
27 words
A gas laser as claimed in claim 1 wherein the anisotropic axes of one reflector are substantially parallel to the corresponding anisotropic axes of the other reflector.
Claim 4
Dependent Claim
29 words
A gas laser as claimed in claim 1 wherein the anisotropic axes of one reflector are substantially at right angles to the corresponding anisotropic axes of the other reflector.
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) | 1982-04-30 | 1982-10-30 | 1983-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-30 | 1986-10-30 | 1987-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-30 | 1990-10-30 | 1991-05-01 | $7700.00 | Window Closed / Lapsed |