DE8715622U1 - High pressure discharge lamp - Google Patents
High pressure discharge lampInfo
- Publication number
- DE8715622U1 DE8715622U1 DE8715622U DE8715622U DE8715622U1 DE 8715622 U1 DE8715622 U1 DE 8715622U1 DE 8715622 U DE8715622 U DE 8715622U DE 8715622 U DE8715622 U DE 8715622U DE 8715622 U1 DE8715622 U1 DE 8715622U1
- Authority
- DE
- Germany
- Prior art keywords
- discharge lamp
- pressure discharge
- bull
- lamp
- high pressure
- 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
- 244000309464 bull Species 0.000 claims description 10
- 229910052708 sodium Inorganic materials 0.000 claims description 6
- 229910052792 caesium Inorganic materials 0.000 claims description 5
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 229910052701 rubidium Inorganic materials 0.000 claims description 5
- 150000002739 metals Chemical class 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 229910000497 Amalgam Inorganic materials 0.000 claims description 2
- 239000002223 garnet Substances 0.000 claims description 2
- 239000011734 sodium Substances 0.000 description 5
- 229910052783 alkali metal Inorganic materials 0.000 description 4
- 150000001340 alkali metals Chemical class 0.000 description 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- WXHYZXNMFJURFX-UHFFFAOYSA-N [Cs].[Hg] Chemical compound [Cs].[Hg] WXHYZXNMFJURFX-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
-
- 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
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
- H01S3/092—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light of flash lamp
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Discharge Lamp (AREA)
Description
Die Erfindung betrifft eine Hochdruckentladungslampe zum Pumpen von Nd-Yag-Lasexn (Neodym-Yttrium-Aluminium-Granat).The invention relates to a high-pressure discharge lamp for pumping Nd-Yag-Lasexn (neodymium-yttrium-aluminium-garnet).
Nd-Yag-Laser wurden bisher mit Kr-Bogenlampen oder Xe (oder Kr)-Blitzlampen gepumpt. In beiden Fallen, insbesondere beim Blitzbetrieb wird viel elektrische Energie in Wellenlängen kleiner 570 nm umgewandelt, die zum Pumpen des Nd-Yag-Lasers nutzlos ist.Nd-Yag lasers have so far been pumped with Kr arc lamps or Xe (or Kr) flash lamps. In both cases, especially in flash mode, a lot of electrical energy is converted into wavelengths smaller than 570 nm, which is useless for pumping the Nd-Yag laser.
Der Erfindung liegt demgemäß die Aufgabe zugrunde, eine Hochdruckentladungslampe der eingangs genannten Art so auszubilden, daß bei geringem Energieaufwand ein effektives Pumpen des Nd-Yag-lasers erfolgt.The invention is therefore based on the object of designing a high-pressure discharge lamp of the type mentioned at the outset in such a way that the Nd-YAG laser is pumped effectively with little energy expenditure.
Bei der Lösung dieser Aufgabe ist davon ausgegangen, daß ein effektives Pumpen von Ne-Yag-Lasern durch die Einstrahlung von Licht mit einer Wellenlänge möglich 1st, die im Bereich von einem oder mehreren der Pumpbänder von Nd-Yag-Lasern liegen. Diese Bänder sind:In solving this problem, it was assumed that effective pumping of Ne-Yag lasers is possible by irradiating light with a wavelength that lies in the range of one or more of the pump bands of Nd-Yag lasers. These bands are:
570 bis 600 nm, 720 bis 750 nm, 790 bis 830 nm, 870 bis 910 nm570 to 600 nm, 720 to 750 nm, 790 to 830 nm, 870 to 910 nm
Ausgehend von dieser Überlegung 1st die der Erfindung zugrundeliegende Aufgabe gelöst durch die Verwendung der Metalle K, Na, Rb, Cs oder von Gemischen davon für die Hochdruckentladung. Die Resonanzlinien dieser Metalle treffen fast genau die Anregungsbänder von Nd-Yag. Based on this consideration, the problem underlying the invention is solved by using the metals K, Na, Rb, Cs or mixtures thereof for the high-pressure discharge. The resonance lines of these metals almost exactly match the excitation bands of Nd-Yag.
2525
Metall 35 NaMetal 35 Na
RbRb
CsCs
( ) Tp 2 Ler / 19.11.1987( ) Tp 2 Ler / 19.11.1987
Resonanzlinie 588/590 766/770 780/795 852/894Resonance line 588/590 766/770 780/795 852/894
• •II I
• III••II I
III
87 6 5 1 t 3 OE87 6 5 1 t 3 OE
'2'2
Die erfindungsgemäße Lampe enthalt also eines der genannten Alkalimetalle oder vorzugsweise eine Mischung dieser Alkalimetalle. Die genaue Erfassung der Nd-Yag-Bander erfolgt durch Druckverbreiterung der Resonanzlinien. 5The lamp according to the invention therefore contains one of the alkali metals mentioned or preferably a mixture of these alkali metals. The precise detection of the Nd-Yag bands is achieved by pressure broadening of the resonance lines. 5
Die Alkalimetalle Na, K, Rb, Cs können auch als Amalgame (Legierungen mit Quecksilber) in die La^ne eingebracht sein. Ferner kann anstelle des üblichen Startgases Ne/Ar auch Xenon verwendet werden. Beide Maßnahmen beeinflussen den Innenwiderstand der Entladungslampe und können zur Steuerung des thermischen Gleichgewichtees verwendet werden.The alkali metals Na, K, Rb, Cs can also be introduced into the lamp as amalgams (alloys with mercury). Furthermore, xenon can also be used instead of the usual starting gas Ne/Ar. Both measures influence the internal resistance of the discharge lamp and can be used to control the thermal equilibrium.
Das Lampengefäß bestehl vorzugsweise aus transluzentem Al2O3, da dieses gegen Alkalimetalldämpfe resistent ist.The lamp vessel is preferably made of translucent Al 2 O 3 , as this is resistant to alkali metal vapors.
Die richtige Druckverbreiterung der Resonanzlinien und das optimale thermische Gleichgewicht in der Lampe sind wichtig. Die Einstellung erfolgt durch Anpassung der elektrischen Parameter im Netzteil der Lampe (Pulslänge, Stromdichte, Brennspannung) sowie die Steuerung der Wärmeabfuhr durch das Lampengefäß und die Lampenelektroden. In der Startphase der Lampe müssen die Elektroden geheizt werden, und zwar entweder extern oder durch einen Niederstrom-Bogen (Simmern).The correct pressure broadening of the resonance lines and the optimal thermal equilibrium in the lamp are important. The setting is made by adjusting the electrical parameters in the lamp's power supply (pulse length, current density, burning voltage) and controlling the heat dissipation through the lamp vessel and the lamp electrodes. During the start-up phase of the lamp, the electrodes must be heated, either externally or by a low-current arc (simmering).
Okannt, z.B. Natrium-Dampflampen oder Cäsium-Quecksilber-üampflaftipen. Diese Lampen dienen Jedoch nicht zum Pumpen eines Nd-Yag-Lasers und werden nicht geblitzt.Known, e.g. sodium vapor lamps or cesium-mercury vapor lamps. However, these lamps are not used to pump an Nd-YAG laser and are not flashed.
Die Erfindung ist nachfolgend anhand eines in der Zeichnung dargestellten AusfOhrungsbelspleles näher erläutert.The invention is explained in more detail below with reference to an example embodiment shown in the drawing.
In der Zeichnung ist ein Lampengehäuse 1 aus transluzentem Al2O3 dargestellt, in dem zwei Elektroden 2, 3 eingeschmolzen sind. Der Innenraum 4 des Lampengehäuses 1 ist mit einem Alkalidampf, beispielsweise aus K, Na, Rb, Cs oder einem Gemisch dieser Metalle, unter Hochdruck gefüllt. Bei der Entla-The drawing shows a lamp housing 1 made of translucent Al 2 O 3 , in which two electrodes 2, 3 are fused. The interior 4 of the lamp housing 1 is filled with an alkali vapor, for example made of K, Na, Rb, Cs or a mixture of these metals, under high pressure.
«I tit««I tit«
• * « &igr;• * « &igr;
• « I I• « I I
• · t < · I· t < · I
••
II.II.
* ♦ · • ft ft* ♦ · • ft ft
87 6 5 1 1 3 OE87 6 5 1 1 3 OE
dung entsteht Licht mit den genannten Wellenlängen, das zum Pumpen s'nes schematisch dargestellten Nd-Yag-Lasers 5 verwendat wird.The resulting light with the wavelengths mentioned is used to pump the schematically shown Nd-YAG laser 5.
3 Schutzansprüche 1 Figur3 Protection claims 1 Figure
«t 1 t ■·· ··■«t 1 t ■·· ··■
• « t ■ ·■·«• « t ■ ·■·«
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8715622U DE8715622U1 (en) | 1987-11-25 | 1987-11-25 | High pressure discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE8715622U DE8715622U1 (en) | 1987-11-25 | 1987-11-25 | High pressure discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE8715622U1 true DE8715622U1 (en) | 1989-03-23 |
Family
ID=6814457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE8715622U Expired DE8715622U1 (en) | 1987-11-25 | 1987-11-25 | High pressure discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE8715622U1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007047173A2 (en) * | 2005-10-13 | 2007-04-26 | General Electric Company | High pressure alkali metal discharge lamp |
-
1987
- 1987-11-25 DE DE8715622U patent/DE8715622U1/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007047173A2 (en) * | 2005-10-13 | 2007-04-26 | General Electric Company | High pressure alkali metal discharge lamp |
| WO2007047173A3 (en) * | 2005-10-13 | 2008-03-06 | Gen Electric | High pressure alkali metal discharge lamp |
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