DE2437434B2 - LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM - Google Patents

LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM

Info

Publication number
DE2437434B2
DE2437434B2 DE19742437434 DE2437434A DE2437434B2 DE 2437434 B2 DE2437434 B2 DE 2437434B2 DE 19742437434 DE19742437434 DE 19742437434 DE 2437434 A DE2437434 A DE 2437434A DE 2437434 B2 DE2437434 B2 DE 2437434B2
Authority
DE
Germany
Prior art keywords
laser
flowing gas
medium
hoses
laser device
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.)
Pending
Application number
DE19742437434
Other languages
German (de)
Other versions
DE2437434A1 (en
Inventor
Arno; Niemann Hans Joachim Dipl.-Chem. Dr.; Schuster Eberhard Dipl.-Chem. Dr. 8520 Erlangen Kersting
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kraftwerk Union AG
Original Assignee
Kraftwerk Union AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kraftwerk Union AG filed Critical Kraftwerk Union AG
Priority to DE19742437434 priority Critical patent/DE2437434B2/en
Priority to FR7523798A priority patent/FR2280989A1/en
Publication of DE2437434A1 publication Critical patent/DE2437434A1/en
Publication of DE2437434B2 publication Critical patent/DE2437434B2/en
Pending legal-status Critical Current

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
    • H01S3/02—Constructional details
    • H01S3/03—Constructional details of gas laser discharge tubes
    • H01S3/036—Means for obtaining or maintaining the desired gas pressure within the tube, e.g. by gettering, replenishing; Means for circulating the gas, e.g. for equalising the pressure within the tube

Description

Die vorliegende Erfindung betrifft eine Lasereinrichlung mit strömendem gasförmigen Lasermedium, das lter Laserröhre über elastische Kunststoffschläuche tugeführt wird. Solche Leitungen brauchen nur für ein Grob- bis Feinvakuum geeignet zu sein. Diese Anforderungen werden durch viele Kunststoffschläuche, z. B. PVC-Schläuche mit Nylonverstärkung erfüllt, sie finden daher häufig in diesem Vakuumbereich Verwendung.The present invention relates to a laser device with flowing gaseous laser medium, the lter laser tube via elastic plastic tubing is performed. Such lines only need for one To be suitable for low to medium vacuum. These requirements are met by many plastic hoses, z. B. PVC hoses with nylon reinforcement, they are therefore often found in this vacuum range Use.

Bei längerem Betrieb mit solchen Gaslasern wurde jedoch beobachtet, daß sich in der Laserröhre Ablagerungen zeigten, die zu einer Verminderung der Laserleistung bzw. sogar zu einem völligen Zusammenbruch des Lasers führten.When such gas lasers were operated for a long time, however, it was observed that in the laser tube Deposits showed that the laser power was reduced or even completely collapsed of the laser.

Diese Ablagerungen wurden als Kohlenstoffablagerungen identifiziert und bisher auf zu geringen Sauerstoffgehalt des Laser-Gasgemisches zurückgeführt. Diese Erklärung befriedigte nicht, da Variationen in der Einstellung des Gasgemisches praktisch keinen Erfolg zeigten. Es stellte sich daher die Aufgabe, dieses Problem erneut zu untersuchen und nach einer Lösung zu forschen, mit deren Hilfe ein dauerhafter Laserbetrieb ermöglicht wird.These deposits have been identified as carbon deposits and have so far been too low Oxygen content of the laser gas mixture returned. This explanation was unsatisfactory because there were variations showed practically no success in adjusting the gas mixture. It was therefore the task of this To re-examine the problem and to research a solution that would help ensure permanent laser operation is made possible.

Die Lösung besteht erfindungsgemäß darin, daß die Schläuche aus weichmacherfreien Kunststoffen hergestellt werden. Als besonders geeignet hat sich dabei Polytetrafluoräthylen als Schlauchwerkstoff herausgestellt. According to the invention, the solution is that the hoses are made of plasticizer-free plastics will. Polytetrafluoroethylene has proven to be particularly suitable as a hose material.

Diese Lösung ergab sich aus Untersuchungen, dieThis solution emerged from research carried out on the

ίο gezeigt haben, daß die Kohlenstoffablagerungen nicht auf zu geringen Sauerstoffgehalt des Lasergasgemisches zurückzuführen sind, sondern vielmehr auf die in den bisher verwandten Kunststoffschläuchen enthaltenen Weichmacher. Diese Weichmacher werden im Laufe der Zeit teilweise an die Gasmischungen abgegeben und dann in der Gasentladung der Laserröhre gespalten. Dies ist die Ursache der Kohlenstoffablagerungen.ίο have shown that the carbon deposits are not are due to insufficient oxygen content in the laser gas mixture, but rather to the in plasticizers contained in the previously used plastic hoses. These plasticizers are im In the course of time partially released to the gas mixtures and then in the gas discharge of the Laser tube split. This is what causes the carbon build-up.

Ausgedehnte Versuche haben erwiesen, daß nach dem Ersatz der bisherigen weichmacherenthaltenden Kunststoffschläuche durch Schläuche aus Polytetrafluoräthylen, die keine Weichmacher enthalten, keinerlei Kohlenstoffablagerungen mehr auftraten. Diese Versuche wurden mit Lasern betrieben, die als Lasermedium eine variable CO—O2 Mischung oder auch CO2 enthielten. Auch nach monatelangem Einsatz dieser modifizierten Lasereinrichtungen waren keinerlei Ablagerungen feststellbar, die Laserleistung blieb konstantExtensive tests have shown that after the replacement of the previous plasticizer-containing Plastic hoses through hoses made of polytetrafluoroethylene that do not contain plasticizers, no more carbon deposits occurred. These experiments were carried out with lasers, which as Laser medium contained a variable CO — O2 mixture or also CO2. Even after months of use These modified laser devices did not show any deposits, the laser power remained constant

Von der Grunderkenntnis dieser Erfindung ausgehend wird es zweckmäßig sein, auch andere im Kreislaufsystem des Lasermediums liegende, evtl. Weichmacher enthaltende Kunststoffteile, wie z. B. Ventile, ebenfalls aus weichmacherfreien Kunststoffen zu fertigen.On the basis of the basic knowledge of this invention, it will be expedient to also use other im Circulatory system of the laser medium lying, possibly plasticizer containing plastic parts such. B. Valves, also to be made from plasticizer-free plastics.

Claims (2)

Patentansprüche:Patent claims: 1. Ijsereinrichtung mit strömendem gasförmigen Lasermedium, das der Laserröhre über elastische Kunststoffschläuche zugeführt wird, dadurch gekennzeichnet, daß die Schläuche aus weichmacherfreien Kunststoffen bestehen.1. Ijseinrichtung with flowing gaseous Laser medium, which is fed to the laser tube via elastic plastic hoses, thereby characterized in that the hoses are made of plasticizer-free plastics. 2. Lasereinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als weichmacherfreier Schlauchwerkstoff Polytetrafluoräthylen vorgesehen ist2. Laser device according to claim 1, characterized in that as a plasticizer-free Hose material polytetrafluoroethylene is provided
DE19742437434 1974-08-02 1974-08-02 LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM Pending DE2437434B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19742437434 DE2437434B2 (en) 1974-08-02 1974-08-02 LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM
FR7523798A FR2280989A1 (en) 1974-08-02 1975-07-30 Laser using gaseous laser medium - with supply of medium via pipes of plasticiser-free plastics, e.g. polytetrafluoroethylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742437434 DE2437434B2 (en) 1974-08-02 1974-08-02 LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM

Publications (2)

Publication Number Publication Date
DE2437434A1 DE2437434A1 (en) 1976-02-19
DE2437434B2 true DE2437434B2 (en) 1976-10-21

Family

ID=5922343

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19742437434 Pending DE2437434B2 (en) 1974-08-02 1974-08-02 LASER DEVICE WITH FLOWING GAS-SHAPED LASER MEDIUM

Country Status (2)

Country Link
DE (1) DE2437434B2 (en)
FR (1) FR2280989A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2581800B1 (en) * 1985-05-13 1987-06-26 Commissariat Energie Atomique INSTALLATION FOR THE PRODUCTION OF A LASER BEAM
DE102004024956B4 (en) * 2004-05-21 2007-08-23 Trumpf Laser- Und Systemtechnik Gmbh Gas laser with gas hose

Also Published As

Publication number Publication date
DE2437434A1 (en) 1976-02-19
FR2280989B1 (en) 1977-12-16
FR2280989A1 (en) 1976-02-27

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