DE3830361A1 - Laser using gas-discharge lamps for supply of energy - feeds laser-active medium, with AC mains connected directly to lamps or via AC-DC mains unit with fixed or adjustable frequency - Google Patents
Laser using gas-discharge lamps for supply of energy - feeds laser-active medium, with AC mains connected directly to lamps or via AC-DC mains unit with fixed or adjustable frequencyInfo
- Publication number
- DE3830361A1 DE3830361A1 DE3830361A DE3830361A DE3830361A1 DE 3830361 A1 DE3830361 A1 DE 3830361A1 DE 3830361 A DE3830361 A DE 3830361A DE 3830361 A DE3830361 A DE 3830361A DE 3830361 A1 DE3830361 A1 DE 3830361A1
- Authority
- DE
- Germany
- Prior art keywords
- laser
- mains
- lamps
- gas
- discharge lamps
- 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.)
- Withdrawn
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
- 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
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/2806—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices and specially adapted for lamps without electrodes in the vessel, e.g. surface discharge lamps, electrodeless discharge lamps
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Abstract
Description
Die Erfindung bezieht sich auf ein Lasergerät, dessen laseraktives Medium durch Gasentladungslampen mit Energie versorgt wird gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a laser device, the laser-active medium is supplied with energy by gas discharge lamps according to the generic term of claim 1.
Solche Lasergeräte sind in den verschiedensten Ausführungsformen bekannt. Allen diesen Geräten ist gemeinsam, daß sie einen z.T. nicht unbeträcht lichen Gleichricht- und Siebaufwand erfordern.Such laser devices are known in a wide variety of embodiments. All these devices have in common that they partly not neglected require rectification and sieving.
Durch die Anmelderin ist ein für medizinische Zwecke verwendbarer Neodym- YAG-Festkörper-Dauerstrichlaser bekannt, dessen Licht über einen Lichtlei ter ins Operationsfeld geleitet wird. Aber auch hier ist noch der Gleich richt- bzw. Siebaufwand erforderlich.The applicant has approved a neodymium YAG solid-state continuous wave laser known, the light via a Lichtlei ter is led into the surgical field. But here, too, is the same Straightening or sieving effort required.
Der Erfindung liegt die Aufgabe zugrunde, ein Lasergerät der eingangs ge nannten Art zu schaffen bei dem der Gleichricht- und Siebaufwand nicht mehr oder nicht in dem bisherigen Umfang erforderlich ist und gleichzeitig eine Lebenszeitverlängerung der Lampen erzielt wird.The invention is based, a laser device of the beginning ge mentioned type to create in which the rectification and sieving effort is not more or not to the extent necessary and at the same time a lifetime extension of the lamps is achieved.
Diese Aufgabe wird durch die im Anspruch 1 angegebenen Maßnahmen gelöst. In den Unteransprüchen sind Weiterbildungen und Ausgestaltungen angegeben. In der Beschreibung sind Ausführungsbeispiele erläutert und in den Figuren der Zeichnung skizziert. Es zeigen:This object is achieved by the measures specified in claim 1. Further developments and refinements are specified in the subclaims. Exemplary embodiments are explained in the description and in the figures of the drawing. Show it:
Fig. 1 ein Schaltbild einer Ausführungsform in schematischer Darstellung, Fig. 1 is a diagram of an embodiment in a schematic representation;
Fig. 2 ein Schaltbild einer zweiten Ausführungsform in schematischer Darstellung. Fig. 2 is a circuit diagram of a second embodiment in a schematic representation.
In der Fig. 1 ist ein Ausführungsbeispiel skizziert, bei dem die Gasent ladungslampe 10 direkt über ein an sich bekanntes Regelglied 14 an das Wechselspannungsnetz AC angeschlossen ist. Dadurch hat der erzeugte Laser strahl die doppelte Frequenz der Netzfrequenz. Die Figur zeigt das Regel glied 14 über dem Phasenanschnitt am Wechselspannungsnetz AC, die Gasent ladungslampen 10, die das laseraktive Medium 12 mit Energie versorgen. Von Lampe zu Lampe führt ein Zündimpulsübertrager 13 und außerdem ist ein Kon densator 15 für den Kurzschluß des Zündimpulses angeordnet. Der bisherige technische Aufwand ist damit durch die vorgeschlagene Konzeption ganz wesentlich minimiert worden.In Fig. 1, an embodiment is outlined, in which the gas discharge lamp 10 is connected directly to the AC network AC via a known control element 14 . As a result, the laser beam generated has twice the frequency of the mains frequency. The figure shows the control element 14 above the phase gating on the AC network, the gas discharge lamps 10 , which supply the laser-active medium 12 with energy. From lamp to lamp leads an ignition pulse transmitter 13 and also a capacitor 15 is arranged for the short circuit of the ignition pulse. The previous design effort has been significantly minimized by the proposed concept.
Bei dem Ausführungsbeispiel gemäß Fig. 2 werden die Gasentladungslampen 10 an einem AC-Netzteil 11, 17 mit fester oder einstellbarer Frequenz der Ausgangsseite betrieben. Die Gleichspannung aus dem AC/DC-Glied 11 wird in einem Zerhacker 17 zerhackt, d.h. in Rechteckimpulse umgewandelt, und über den Trafo 16, 16 a auf die Gasentladungslampe 10 gegeben. Durch den soge nannten Übertrager 16 ist diese Ausführungsform sehr anpassungsfähig, d.h. eine leichtere Spannungsanpassung von Netz zu Lampe wird durch diese Aus gestaltung erzielt. Die Pulsfrequenz wird hier beim Zerhacker mit der Wechselspannungsfrequenz eingestellt. Sind die Frequenzen größer als l/Fluoreszenzlebensdauer, so kann ein cw-Laser betrieben werden. Für Nd:YAG-Laser beträgt die Fluoreszenzlebensdauer ca. 230µs.In the embodiment shown in FIG. 2, the gas discharge lamps 10 are operated on an AC power supply 11 , 17 with a fixed or adjustable frequency on the output side. The DC voltage from the AC / DC element 11 is chopped in a chopper 17 , ie converted into rectangular pulses, and given to the gas discharge lamp 10 via the transformer 16 , 16 a . By the so-called transformer 16 , this embodiment is very adaptable, ie an easier voltage adjustment from network to lamp is achieved by this design. The pulse frequency is set here at the chopper with the AC voltage frequency. If the frequencies are greater than 1 / fluorescence lifetime, a cw laser can be operated. For Nd: YAG lasers, the fluorescence lifetime is approx. 230µs.
Durch die vorgeschlagenen Maßnahmen ist durch den Wegfall aller Gleich richt- und Siebanordnungen ein rationeller wirtschaftlicher Aufbau erzielt worden, der außerdem durch einen gleichmäßigen Abbrand die Lebensdauer der Gasentladungslampen wesentlich verlängert. Der Laserstrahl ist mit der doppelten Frequenz der Eingangsspannung gepulst und die Pulsfrequenz ist mit der Wechselspannungsfrequenz einstellbar.Due to the proposed measures, the elimination of all equals straightening and sieve arrangements achieved a rational economic structure which, moreover, is characterized by an even burn-up, the life of the Gas discharge lamps significantly extended. The laser beam is with the double the frequency of the input voltage and the pulse frequency is adjustable with the AC voltage frequency.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3830361A DE3830361A1 (en) | 1988-09-07 | 1988-09-07 | Laser using gas-discharge lamps for supply of energy - feeds laser-active medium, with AC mains connected directly to lamps or via AC-DC mains unit with fixed or adjustable frequency |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3830361A DE3830361A1 (en) | 1988-09-07 | 1988-09-07 | Laser using gas-discharge lamps for supply of energy - feeds laser-active medium, with AC mains connected directly to lamps or via AC-DC mains unit with fixed or adjustable frequency |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3830361A1 true DE3830361A1 (en) | 1990-03-15 |
Family
ID=6362433
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3830361A Withdrawn DE3830361A1 (en) | 1988-09-07 | 1988-09-07 | Laser using gas-discharge lamps for supply of energy - feeds laser-active medium, with AC mains connected directly to lamps or via AC-DC mains unit with fixed or adjustable frequency |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3830361A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0579367A1 (en) * | 1992-07-11 | 1994-01-19 | Lumonics Ltd. | A laser system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE851523C (en) * | 1950-11-08 | 1952-10-06 | Dominitwerke | Device for the ignition and operation of gas discharge tubes |
AT267678B (en) * | 1965-12-07 | 1969-01-10 | Elin Union Ag | Circuit for a fluorescent lamp fed from an alternating voltage source via controllable electrical valves |
US4566107A (en) * | 1982-08-13 | 1986-01-21 | Fuji Photo Optical Co., Ltd. | Laser apparatus |
DD234981A1 (en) * | 1985-02-28 | 1986-04-16 | Rema Stollberg Veb | METHOD AND DEVICE FOR CONNECTING AND OPERATING FLUORESCENT LAMPS. DESIGNED TO CONNECT AND OPERATE FLUORESCENT LAMPS WITH 50 Hz POWER SUPPLY |
DE3717142A1 (en) * | 1986-11-20 | 1988-06-01 | John Tulip | NEODYMLASER LONG WAVELENGTH |
-
1988
- 1988-09-07 DE DE3830361A patent/DE3830361A1/en not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE851523C (en) * | 1950-11-08 | 1952-10-06 | Dominitwerke | Device for the ignition and operation of gas discharge tubes |
AT267678B (en) * | 1965-12-07 | 1969-01-10 | Elin Union Ag | Circuit for a fluorescent lamp fed from an alternating voltage source via controllable electrical valves |
US4566107A (en) * | 1982-08-13 | 1986-01-21 | Fuji Photo Optical Co., Ltd. | Laser apparatus |
DD234981A1 (en) * | 1985-02-28 | 1986-04-16 | Rema Stollberg Veb | METHOD AND DEVICE FOR CONNECTING AND OPERATING FLUORESCENT LAMPS. DESIGNED TO CONNECT AND OPERATE FLUORESCENT LAMPS WITH 50 Hz POWER SUPPLY |
DE3717142A1 (en) * | 1986-11-20 | 1988-06-01 | John Tulip | NEODYMLASER LONG WAVELENGTH |
Non-Patent Citations (1)
Title |
---|
D.A. Huchital, G.N. Steinberg: "Pumping of Nod: YAG with Electrodeless Arc Lamps" in: IEEE J. of Quant. Electronics, Bd. QE-12, Nr. 1 1976, S. 1-9 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0579367A1 (en) * | 1992-07-11 | 1994-01-19 | Lumonics Ltd. | A laser system |
US5434880A (en) * | 1992-07-11 | 1995-07-18 | Lumonics Ltd. | Laser system |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8125 | Change of the main classification |
Ipc: H05B 41/36 |
|
8130 | Withdrawal |