EP0235185A1 - Process and device for converting electromagnetic waves. - Google Patents
Process and device for converting electromagnetic waves.Info
- Publication number
- EP0235185A1 EP0235185A1 EP19860904827 EP86904827A EP0235185A1 EP 0235185 A1 EP0235185 A1 EP 0235185A1 EP 19860904827 EP19860904827 EP 19860904827 EP 86904827 A EP86904827 A EP 86904827A EP 0235185 A1 EP0235185 A1 EP 0235185A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cavity
- radiation
- electromagnetic
- energy density
- walls
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
Definitions
- the invention relates to a method and a device for converting electromagnetic waves, in particular light, into monochromatic, coherent electromagnetic radiation with a predeterminable frequency and in heat radiation, the predeterminable frequency at the lower end of the Planck-distributed frequency spectrum of the heat radiation lies.
- electromagnetic radiation is so strongly concentrated in a cavity with reflecting walls that the average radiation density in the cavity exceeds a critical value and the part of the radiation exceeding this value occupies the lowest electromagnetic energy state of the cavity.
- the invention uses Bose-Eins ⁇ in condensation of electromagnetic radiation.
- Einstein found in the quantum statistical description of an ideal gas of indistinguishable particles, which are subject to Bose statistics and have rest masses other than zero (A. Einstein: Quantum theory of the one-atom ideal gas, second treatise, session reports of the Prussian Academy of Sciences , physico-mathematical class, 1925, I) that there is a critical particle density, after which it is exceeded that all excess particles spontaneously change into the state of lowest energy, in which their kinetic energy is zero and they are no longer the pressure of the gas bosons' contribute it; consequently there is a critical pressure to the critical particle density which cannot be exceeded. This "Bose-Einstein condensation" is used to explain the superfluidity in helium.
- the state of lowest energy is determined by the dimensions of the cavity and corresponds to a non-zero photon energy. If the cavity contains electromagnetic radiation with an average energy density which is higher than the critical one, Bose-Einstein condensation manifests itself in such a way that the part of the radiation which exceeds the critical density essentially spontaneously occupies the state of lowest energy and binds excess energy that exceeds the critical energy density. In this way, in addition to the radiation with a black radiation spectrum, a practically monochromatic, coherent electromagnetic wave is formed, the frequency of which corresponds to the lowest intrinsic energy value of the cavity containing the electromagnetic radiation.
- the dimensions of the cavity containing the electromagnetic radiation can be chosen such that the deviation of the actual radiation pressure in the cavity of critical value can be pressed under any small barrier.
- the invention thus applies the Bose-Einstein condensation, in the case of electromagnetic radiation of technically and consists of a device for generating electromagnetic 'radiation having a mean energy density which is greater than a critical mean energy density u cr it, i.e. a cavity of the dimension and apparatus or arrangement for introducing the radiation of supercritical average energy density into the cavity, the cavity thus providing is that the incident electromagnetic radiation is diffusely, elastically scattered, and the quality of the reflectivity of the surface or boundary delimiting the cavity is determined by the fact that the power of the electromagnetic radiation radiated into the cavity is greater than the total through the boundary surface of the Cavity-absorbed power loss at a value of the electromagnetic energy density in the cavity that is greater than u cr it un ⁇ , in addition, inside the cavity there is an absorber thermally insulated from the cavity boundary surfaces and adapted to the electromagnetic spectrum in the cavity, which can be enclosed during the irradiation process by means of a boundary reflecting with respect to the remaining cavity, which has essentially the same reflectivity quality as the other cavity boundary, so
- T in Kelvin
- the cavity of dimension d is also designed such that a considerable amount of electromagnetic radiation can be stored in it and can be emitted again in a controlled manner, where d is either 2 or 3.
- FIG. 1 shows schematically, in perspective, a cavity with the features of the invention, without an absorber, without an absorber attachment and without a base, which have been omitted to simplify the illustration, as well as the diffusers, only one of which is marked,
- FIG. 2 shows a cross section through the cavity
- FIG. 3 shows a cross section of the cover of the absorber by base and slide, with its attachment to the inner wall of the cavity
- Figure 4 shows the course of the absorber with base, without
- each with a broadband output spectrum which are selected such that their frequency ranges, taken together, approximately produce a Planck spectrum, the temperature of which is compatible with the material of a black absorber 7 in a cavity 2
- electromagnetic radiation 1 is radiated into the cavity 2 through an inlet opening 3 and diffusely, elastically scattered by means of a (schematically drawn) diffuser 6.
- a diffuser 6 In order to achieve a high reflectivity in the cavity, the inner walls of the cavity 2 and the surface of the base 9 guiding the slide 10, the surface of the slide 10 and the diffuser 6 are superconducting after they have been cooled to a correspondingly low temperature.
- the slider 10 are guided in the wall so that the reflectivity in the cavity, if the absorber 7 is not used, is not significantly impaired; the closures of the inlet opening 3 and the outlet opening 4 are reflective towards the cavity (superconducting surface).
- the absorber 7 has no direct contact with the bases 9, the slides 10 and the walls of the cavity 2 and is carried by fastenings 8 which are very thermally insulating and which are embedded in the wall of the cavity 2.
- the presence of the absorber supports the setting of the thermal equilibrium of the radiation in the cavity and thus the establishment of the monochromatic, coherent electromagnetic wave which occupies the basic energetic state of the cavity and which absorbs the excess energy which exceeds the critical energy.
- the desired amount of radiation is irradiated into the superconducting cavity when the slides 10 are closed by means of the laser through the small inlet opening 3.
- the absorber 7 is made accessible by opening the slide. After the Bose-Einstein condensation of the radiation has occurred, irradiation can continue. The superconducting state of the cavity can no longer be maintained for 2 uss; however, the limitation should also have a good reflectivity quality under normal conditions.
- the inlet opening 3 is closed with a closure 5.
- an otherwise closed outlet opening 4 is used for the controlled removal of electromagnetic radiation with a Planck spectrum.
- the discharge power is determined by the size of the opening, which can be adjusted with the aid of a closure 5a.
- Bose-Einstein condensation of electromagnetic radiation which has been achieved by concentrating radiation beyond a critical density, can differ considerably from the one described; e.g. the role of the absorber can be assumed by a suitable gaseous medium present in the cavity or, in the case of non-superconducting cavities, possibly by the influence of the walls.
- the invention is not limited by the specific embodiment.
Abstract
Production d'un rayonnement électromagnétique cohérent monochromatique par application de la condensation Bose-Einstein du rayonnement électromagnétique, laquelle est obtenue par la mise en oeuvre d'une densité de flux d'énergie de rayonnement électromagnétique moyenne surcritique suffisamment importante dans une cavité appropriée audit rayonnement électromagnétqiue.Production of a coherent monochromatic electromagnetic radiation by application of the Bose-Einstein condensation of electromagnetic radiation, which is obtained by the implementation of an energy flux density of supercritical medium electromagnetic radiation sufficiently high in a cavity suitable for said radiation electromagnetic.
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86904827T ATE101298T1 (en) | 1985-08-30 | 1986-08-27 | METHOD AND DEVICE FOR TRANSFORMING ELECTROMAGNETIC WAVES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IE215485 | 1985-08-30 | ||
IE215485 | 1985-08-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0235185A1 true EP0235185A1 (en) | 1987-09-09 |
EP0235185B1 EP0235185B1 (en) | 1994-02-02 |
Family
ID=11033145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86904827A Expired - Lifetime EP0235185B1 (en) | 1985-08-30 | 1986-08-27 | Process and device for converting electromagnetic waves |
Country Status (5)
Country | Link |
---|---|
US (1) | US4809292A (en) |
EP (1) | EP0235185B1 (en) |
JP (1) | JPS63501100A (en) |
DE (1) | DE3689616D1 (en) |
WO (1) | WO1987001503A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6707837B1 (en) * | 1998-09-14 | 2004-03-16 | Mueller Eberhard | Method and device for obtaining a flow of photons between resonances in an electromagnetic resonator in a controlled manner |
FR2795248B1 (en) * | 1999-06-21 | 2004-11-12 | Lprl Laboratoire De Physique D | MONOCHROMATIC SOURCE COMPRISING AN OPTICALLY ACTIVE MATERIAL |
WO2007048114A2 (en) * | 2005-10-19 | 2007-04-26 | Cruz Aluizio M | Distributive optical energy system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3614663A (en) * | 1965-11-26 | 1971-10-19 | North American Rockwell | Black-body-pumped laser |
US4161436A (en) * | 1967-03-06 | 1979-07-17 | Gordon Gould | Method of energizing a material |
-
1986
- 1986-08-27 DE DE86904827T patent/DE3689616D1/en not_active Expired - Fee Related
- 1986-08-27 EP EP86904827A patent/EP0235185B1/en not_active Expired - Lifetime
- 1986-08-27 WO PCT/EP1986/000502 patent/WO1987001503A1/en active IP Right Grant
- 1986-08-27 JP JP61504640A patent/JPS63501100A/en active Pending
- 1986-08-27 US US07/051,466 patent/US4809292A/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO8701503A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE3689616D1 (en) | 1994-03-17 |
US4809292A (en) | 1989-02-28 |
EP0235185B1 (en) | 1994-02-02 |
WO1987001503A1 (en) | 1987-03-12 |
JPS63501100A (en) | 1988-04-21 |
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