GB1303696A - - Google Patents
Info
- Publication number
- GB1303696A GB1303696A GB4382170A GB4382170A GB1303696A GB 1303696 A GB1303696 A GB 1303696A GB 4382170 A GB4382170 A GB 4382170A GB 4382170 A GB4382170 A GB 4382170A GB 1303696 A GB1303696 A GB 1303696A
- Authority
- GB
- United Kingdom
- Prior art keywords
- light
- photocathode
- photo
- cathode
- image
- 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.)
- Expired
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052792 caesium Inorganic materials 0.000 abstract 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 abstract 1
- 229910052737 gold Inorganic materials 0.000 abstract 1
- 239000010931 gold Substances 0.000 abstract 1
- CPBQJMYROZQQJC-UHFFFAOYSA-N helium neon Chemical compound [He].[Ne] CPBQJMYROZQQJC-UHFFFAOYSA-N 0.000 abstract 1
- 229910052759 nickel Inorganic materials 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 abstract 1
- 238000009304 pastoral farming Methods 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J11/00—Measuring the characteristics of individual optical pulses or of optical pulse trains
-
- G—PHYSICS
- G04—HOROLOGY
- G04F—TIME-INTERVAL MEASURING
- G04F13/00—Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00
- G04F13/02—Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00 using optical means
- G04F13/026—Measuring duration of ultra-short light pulses, e.g. in the pico-second range; particular detecting devices therefor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
- Measurement Of Radiation (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
- Lasers (AREA)
Abstract
1303696 Optical apparatus COMMISSARIAT A L'ENERGIE ATOMIQUE 14 Sept 1970 [12 Sept 1969] 43821/70 Heading G2J Ultra-short pulses of monochromatic polarized light are measured by splitting the light-beam 1 into two beams 3, 4 which follow identical path lengths and interfere on the surface of a photocathode 7 located in a vacuum, the interference causing the emission of electrons from said photo-cathode 7 which are used to form an image of the interference zone from which the duration of the light pulses can be deduced . The image is formed by making the electrons from photocathode 7 incident upon an electron multiplier system 8, 9, comprising parallel fibres polarized by a D.C. generator, and then impinge upon a fluorescent screen or photographic plate 10. If the screen is used the resultant image is photographed. The light beam is preferably laser light from e.g. helium-neon gas laser or a solid neodymium-doped glass laser and the photocathode preferably has a surface of a thin layer of gold, caesium, silver or nickel. The two beams are incident on photo-cathode 7 at identical, and preferably grazing, angles of incidence. The pulse duration #t is derived from the formula #t = 1 sin #/C where 1 is the half-width of an interference fringe, # is the angle of incidence and C the speed of light in the medium adjacent the photo-cathode 7.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR6931107A FR2063098A1 (en) | 1969-09-12 | 1969-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1303696A true GB1303696A (en) | 1973-01-17 |
Family
ID=9040002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4382170A Expired GB1303696A (en) | 1969-09-12 | 1970-09-14 |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3641343A (en) |
| JP (1) | JPS4942717B1 (en) |
| DE (1) | DE2044908A1 (en) |
| FR (1) | FR2063098A1 (en) |
| GB (1) | GB1303696A (en) |
| NL (1) | NL7013476A (en) |
| SU (1) | SU500772A3 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH529343A (en) * | 1971-02-23 | 1972-10-15 | Bbc Brown Boveri & Cie | Method and arrangement for investigating the coherence of light radiation |
| US3764217A (en) * | 1972-06-16 | 1973-10-09 | Us Navy | Pulsed coherence length measurement device |
| GB1458637A (en) * | 1973-10-18 | 1976-12-15 | Anti Sound Ab | Partition |
| US4037959A (en) * | 1975-12-15 | 1977-07-26 | The United States Of America As Represented By The Secretary Of The Navy | Means for real-time laser source characterization |
| JPS5280634A (en) * | 1975-12-26 | 1977-07-06 | Mitsui Mining & Smelting Co Ltd | Sound-proof sliding door |
| JPS5471814A (en) * | 1977-11-17 | 1979-06-08 | Kubota Ltd | Building panel |
| US5007717A (en) * | 1988-05-11 | 1991-04-16 | Antonello Cutolo | Real time analyzer for pulsed laser systems |
| DE4023175A1 (en) * | 1990-07-20 | 1992-01-30 | Max Planck Gesellschaft | METHOD AND DEVICE FOR OBTAINING DATA FOR DETERMINING THE DURATION AND FREQUENCY MODULATION OF ULTRA-SHORT LASER PULSES |
| US5308971A (en) * | 1993-01-25 | 1994-05-03 | New York University | Measurement apparatus and techniques for ultrashort events using electron photoemission with a superlinear photoemission active element |
| DE19944913B4 (en) * | 1999-09-13 | 2012-07-12 | Carl Zeiss Meditec Ag | Method and device for pulse duration measurement of very short light pulses |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3381136A (en) * | 1964-06-17 | 1968-04-30 | Massachusetts Inst Technology | Interferometric fluorescent lifetime measuring arrangement |
| GB1088838A (en) * | 1964-11-19 | 1967-10-25 | Nat Res Dev | Diffraction grating |
| US3392403A (en) * | 1966-04-13 | 1968-07-09 | Nasa Usa | Measurement of time differences between luminous events |
| US3453429A (en) * | 1967-07-21 | 1969-07-01 | Bell Telephone Labor Inc | Signal detector |
| GB1175598A (en) * | 1967-08-10 | 1969-12-23 | Mullard Ltd | Improvements in or relating to Image Intensifiers |
-
1969
- 1969-09-12 FR FR6931107A patent/FR2063098A1/fr not_active Withdrawn
-
1970
- 1970-09-08 US US70037A patent/US3641343A/en not_active Expired - Lifetime
- 1970-09-10 DE DE19702044908 patent/DE2044908A1/en active Pending
- 1970-09-11 NL NL7013476A patent/NL7013476A/xx unknown
- 1970-09-11 SU SU1476541A patent/SU500772A3/en active
- 1970-09-11 JP JP45079889A patent/JPS4942717B1/ja active Pending
- 1970-09-14 GB GB4382170A patent/GB1303696A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR2063098A1 (en) | 1971-07-09 |
| SU500772A3 (en) | 1976-01-25 |
| NL7013476A (en) | 1971-03-16 |
| JPS4942717B1 (en) | 1974-11-16 |
| DE2044908A1 (en) | 1971-03-25 |
| US3641343A (en) | 1972-02-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |