GB1054792A - - Google Patents
Info
- Publication number
- GB1054792A GB1054792A GB1054792DA GB1054792A GB 1054792 A GB1054792 A GB 1054792A GB 1054792D A GB1054792D A GB 1054792DA GB 1054792 A GB1054792 A GB 1054792A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filaments
- plates
- electron beam
- deflect
- lasing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/0955—Processes or apparatus for excitation, e.g. pumping using pumping by high energy particles
- H01S3/0959—Processes or apparatus for excitation, e.g. pumping using pumping by high energy particles by an electron beam
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- High Energy & Nuclear Physics (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Lasers (AREA)
Abstract
1,054,792. Lasers; cathode-ray tubes. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. July 8, 1963 [July 6, 1962], No. 27025/63. Headings H1C and HID. In a laser situated in an evacuated envelope the pumping energy is supplied by an electron beam which is directed on to the solid laser material. Modulation of the electron beam effects modulation of the intensity of the generated light beam. As shown in the embodiment of Fig. 4 in which the apparatus is enclosed in an evacuated envelope 50 the lasing element comprises a number of parallel filaments 1 of a glass including 1 % of ytterbium or meodynie which are placed on a metal plate 4 acting as an anode for the electron beam from gun 2. Plates 31-32 deflect the beam along the fibres 1 and plates 21-22 deflect the beam normal to the longitudinal axis of the fibres so that when the alternating current generators 6, 5 are connected respectively to the two sets of plates the filaments are swept by the beam to cause uniform excitation of the electrons of the lasing material. The radiation produced by stimulated emission is propagated along the surfaces of the lasing elements as a surface travelling wave normal to the electron beam. In the apparatus of Figs. 5 and 6 (not shown) two semi-transparent mirrors 7, 8 are positioned at the ends of the filaments and transform the stimulated emission into a standing wave which propagates outwardly of the envelope. Cooling of the plate 4 is achieved by bath 10 of liquid nitrogen. A lens may be situated outside of the structure to deflect the output light or the ends of the filaments themselves may be bent. A flat beam and a single pair of deflecting plates is used. In another arrangement all the filaments may be excited simultaneously by using an undeflected and unconcentrated beam.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR903140A FR1335136A (en) | 1962-07-06 | 1962-07-06 | Stimulated emission light source, pumped by electron bombardment |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1054792A true GB1054792A (en) |
Family
ID=8782620
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1054792D Active GB1054792A (en) | 1962-07-06 |
Country Status (3)
Country | Link |
---|---|
DE (1) | DE1183597B (en) |
FR (1) | FR1335136A (en) |
GB (1) | GB1054792A (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3393373A (en) * | 1963-07-11 | 1968-07-16 | Stimler Morton | Electron stimulated optical maser |
DE1284535B (en) * | 1965-01-11 | 1968-12-05 | Inst Plasmaphysik Gmbh | Optical transmitter for phase coherent radiation |
DE1514349B1 (en) * | 1965-05-07 | 1970-04-23 | Ringsdorff Werke Gmbh | Optical transmitter or amplifier |
US3575627A (en) * | 1967-12-29 | 1971-04-20 | Rca Corp | Cathode-ray tube with screen comprising laser crystals |
US3643177A (en) * | 1969-11-17 | 1972-02-15 | Westinghouse Electric Corp | Optical maser |
US3585521A (en) * | 1969-12-22 | 1971-06-15 | Westinghouse Electric Corp | Stimulated emission of radiation device |
DE3546280A1 (en) * | 1985-12-28 | 1987-07-30 | Schott Glaswerke | SOLID LASER BAR FOR HIGH PERFORMANCE |
-
0
- GB GB1054792D patent/GB1054792A/en active Active
-
1962
- 1962-07-06 FR FR903140A patent/FR1335136A/en not_active Expired
-
1963
- 1963-07-05 DE DEC30369A patent/DE1183597B/en active Pending
Also Published As
Publication number | Publication date |
---|---|
DE1183597B (en) | 1964-12-17 |
FR1335136A (en) | 1963-08-16 |
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