DE2264749A1 - LONGITUDINAL FLOW, ELECTRICALLY PUMPED CO DEEP 2 LASER - Google Patents

LONGITUDINAL FLOW, ELECTRICALLY PUMPED CO DEEP 2 LASER

Info

Publication number
DE2264749A1
DE2264749A1 DE2264749*A DE2264749A DE2264749A1 DE 2264749 A1 DE2264749 A1 DE 2264749A1 DE 2264749 A DE2264749 A DE 2264749A DE 2264749 A1 DE2264749 A1 DE 2264749A1
Authority
DE
Germany
Prior art keywords
laser
longitudinal flow
deep
electrically pumped
electrode
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
Application number
DE2264749*A
Other languages
German (de)
Other versions
DE2264749B2 (en
DE2264749C3 (en
Inventor
Gunther Dipl Phys Dr Rer Sepp
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm 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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Priority to DE19722264749 priority Critical patent/DE2264749C3/en
Priority claimed from DE19722264749 external-priority patent/DE2264749C3/en
Publication of DE2264749A1 publication Critical patent/DE2264749A1/en
Publication of DE2264749B2 publication Critical patent/DE2264749B2/en
Application granted granted Critical
Publication of DE2264749C3 publication Critical patent/DE2264749C3/en
Expired legal-status Critical Current

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/02Constructional details
    • H01S3/03Constructional details of gas laser discharge tubes
    • H01S3/034Optical devices within, or forming part of, the tube, e.g. windows, mirrors
    • H01S3/0346Protection of windows or mirrors against deleterious effects
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01SDEVICES 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
    • H01S3/00Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
    • H01S3/14Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
    • H01S3/22Gases
    • H01S3/223Gases the active gas being polyatomic, i.e. containing two or more atoms
    • H01S3/2232Carbon dioxide (CO2) or monoxide [CO]

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Description

L:jngsdurchströmter, elektrisch gepumpter CO2-Laser Die Erfindung bezieht sich auf einen längsdurchströmten, elektrisch gepumpten CO2-Laser, dessen Brewsterfenster jeweils auf einem drehbar und auswechselbar an den Elektrodenr.iumen angeordneten Trägerkörper ruhen.L: recently perfused, electrically pumped CO2 laser. The invention refers to an electrically pumped CO2 laser with longitudinal flow, its Brewster windows each rotatable and exchangeable on the electrode tubes arranged support body rest.

Es sind schon CO-Laser bekanntgeworden (DP 1 226 724), ei denen wenigstens der eine von den beiden Spiegeln an einem Trigerkörper befestigt ist, dessen konisch verlaufender Teil des Stü.tzkörpers seinerseits in einer entsprechenden Öffnung der Stirnwand un eine Achse drehbar und dich-t eingepaßt ist, wobei die gedachten Drehachsen einen spitzen Winkel α und die Spiegelachse und die Drehachse einen spitzen Winkel miteinander bilden. Diese Ausbildung ist ausschließlich nur als Justieranordnung für die inneren Resonatorspeigel vorgesehen.CO lasers have already become known (DP 1 226 724), at least one of them one of the two mirrors is attached to a trigger body, its conical running part of the support body in turn in a corresponding opening the front wall is rotatable un an axis and fits you-t, the imaginary Axes of rotation an acute angle α and the mirror axis and the axis of rotation one form acute angles with each other. This training is only as an adjustment arrangement for the inner resonator mirror intended.

Weiterhin ist es bekannt, um die Sputteringeffekte herabzusetzen, die Entladungsrohre von Hochleistungslasern entweder aus sputterfesten Graphitsegmenten aufzubauen, oder die Segmente mit einer gegen Innenbeschuß resistenten Schutzschicht zu iiberziehen. (Technische Rundschau Nr. 20 vom 7.5.71, S.53) Außerdem wird das Entladungsrohr wassergekühlt.It is also known to reduce the sputtering effects, the discharge tubes of high-power lasers either made of sputter-proof graphite segments build up, or the segments with a protective layer resistant to internal fire to overdraw. (Technische Rundschau No. 20 of 7.5.71, p.53) In addition, that Discharge tube water-cooled.

Es ist allgemein bekannt, daß durch effektivere Kühlung das "sputtering" der Elektroden und de-s Entladungsrohres verringert wird. Nur erfordert die bekannte Ausbitdung, daß jedes einzelne llaute i I des zusammensetzbaren Entladungsrohres mit einer isolierenden Schutzschicht ilberzogen wird und außerdem jedes Bauteil iiber lösbare Flansche mit besonderen Dichtungen mit den übrigen Bauteilen verbunden wird.It is well known that the "sputtering" the electrodes and the discharge tube is reduced. Only requires the familiar Specification that every single lute i I of the assemblable discharge tube is covered with an insulating protective layer and also each component Connected to the other components via detachable flanges with special seals will.

Die Aufgabe, die der Erfindung zugrundeliegt, ist darin zu sehen, daß ein Beschlagen der Brewsterfenster infolge Ionenbeschuß aus der Gasentladung beziehungsweise der damit verbundenen "Zerstäubung" der Elektroden zu verhindern.The task on which the invention is based is to be seen in that fogging of the Brewster window as a result of ion bombardment from the gas discharge or the associated "atomization" of the electrodes.

Diese Aufgabe wird dadurch gelost, daß den konzentrisch zur Laserstrahl richtung angeordneten Elektroden jeweils eine Blende und/oder ein verlängerter Steckzapfen zugeordnet ist.This task is solved in that the concentric to the laser beam direction arranged electrodes each have a diaphragm and / or an elongated plug-in pin assigned.

Die Erfindung ist nachfolgend an einem Beispiels beschrieben und gezeichnet. Die einzige Figur der Zeichnung zeigt die erfindungsgemäße Anordnung in einer Lasergesamtanordnung in schematischer Darstellung ohne den Gehäusemantel.The invention is described and drawn below using an example. The single figure of the drawing shows the arrangement according to the invention in an overall laser arrangement in a schematic representation without the housing shell.

Das in der Zeichnung gezeigte Ausführungsbeispiel eines C02-Lasers setzt sich aus zwei getrennten, starren Baugruppen zusammen, welche elastisch miteinander verbunden sind. Für die vorliegende Erfindung ist jedoch nur die sogenannte Laserröhre interessant. Diese Laserröhre setzt sich aus dem Entladungsrohr 10 und aus den Elektrodenkammern 11, 12 zusammen, in den konzentrisch angeordnete Elektroden 13, 14 lagern. Entladungsrohr 10 und Elektrodenkammern 13, 14 sind völlig von einem Wasserkühlmantel 15 umgeben. Die Elektrodenkammern 11, 12 enden in sogenannte Schliffhiilsen 15, 16, in die Trägerzapfen 17 für die Brewsetrfenster 18 drehbar und auswechselbar gesteckt erden. Zwischen Elektrode 14 bzw.The embodiment of a CO2 laser shown in the drawing consists of two separate, rigid assemblies, which are elastic with each other are connected. For the present invention, however, is only the so-called Laser tube Interesting. This laser tube consists of the discharge tube 10 and the electrode chambers 11, 12 together, in which concentrically arranged electrodes 13, 14 are stored. Discharge tube 10 and electrode chambers 13, 14 are completely surrounded by a water cooling jacket 15. The electrode chambers 11, 12 end in so-called ground-joint sleeves 15, 16 in the support pins 17 for the Brewsetr window 18 can be rotated and plugged in interchangeably. Between Electrode 14 resp.

13 und Trigerzapfen 17 aind nun Blenden 19 bzw. 20 angeordnet. Dadurch wird der Raumwinkel, unter dem die Elektrode vom Brewsterfenster aus gesehen wird, stark verringert oder gar zu "Null" gemacht. Weil beim "sputtering" die Partikel von den Elektroden nahezu geradlinig wegfliegen, wird durch die vorgeschlagene Blendenanordnung das Beschlagen der Brewsterfenster 18 weitgehend verhindert. Denselben Zweck erfiillen in den Elektrodenraum 11 verlängerte Steckzapfen 21 der Trägerzapfen 17. Den größten Schutzeffekt aber bildet die Anordnung beider Maßnahmen zusammen, also verlängerter Steckzapfen 21 und Blende 20, wie es in der Zeichnung in der linen Elektrodenkammer 11 dargestellt ist. Die Trägerzapfen 17 sind den Schliffhülsen 15, 16 entsprechend durchbohrte Glasstöpsel, die auf einer Seite das Brewsterfenster tragen. Der verlängerte Steckzapfen 21 entspricht in seinem Durchmesser demjenigen des Gasentladungsrohres 10 und ragt ao tief in die Elektrodenkammer 11, daß die Elektrode 13 außerhalb'des Raumwinkels liegt.13 and trigger pin 17 are now diaphragms 19 and 20, respectively. Through this becomes the solid angle at which the electrode is seen from the Brewster window, greatly reduced or even made "zero". Because with "sputtering" the particles Fly away from the electrodes almost in a straight line is due to the proposed aperture arrangement the fogging of the Brewster window 18 largely prevented. Serve the same purpose In the electrode space 11 extended plug-in pin 21 of the support pin 17. The largest The protective effect, however, forms the arrangement of both measures together, i.e. longer Plug-in pin 21 and cover 20, as shown in the drawing in the linen electrode chamber 11 is shown. The support pins 17 are the ground joint sleeves 15, 16 accordingly pierced glass stoppers bearing the Brewster window on one side. The extended Plug-in pin 21 corresponds in its diameter to that of the gas discharge tube 10 and protrudes deep into the electrode chamber 11 that the electrode 13 outside'des Solid angle lies.

- Patentanspruch - - claim -

Claims (1)

Patentanspruch Längsdurchströmter, elektrisch gepumpter C02-Laser, dessen Brewsterfenster auf einem drehbar und auswechselbar an den Elektrodenräumen angeordneten TrXgerkörper ruhen, dadurch g e k e n n z e i c h n e t , dan den konzentrisch zur Laserstrahlrichtung angeordneten Elektroden (25, 26) jeweils eine Ulende (27, 28) und/oder ein verlängerter Steckzapfen (31) zugeordnet ist. Patent claim electrically pumped C02 laser with longitudinal flow, its Brewster window on a rotatable and exchangeable on the electrode chambers The arranged carrier body is at rest, so it is not shown, then the concentric electrodes (25, 26) arranged in relation to the direction of the laser beam each have an end (27, 28) and / or an extended plug pin (31) is assigned.
DE19722264749 1972-04-22 Electrically excited CO deep 2 laser with longitudinal flow Expired DE2264749C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19722264749 DE2264749C3 (en) 1972-04-22 Electrically excited CO deep 2 laser with longitudinal flow

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722264749 DE2264749C3 (en) 1972-04-22 Electrically excited CO deep 2 laser with longitudinal flow

Publications (3)

Publication Number Publication Date
DE2264749A1 true DE2264749A1 (en) 1974-11-21
DE2264749B2 DE2264749B2 (en) 1976-03-25
DE2264749C3 DE2264749C3 (en) 1976-11-11

Family

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436145A1 (en) * 1984-10-02 1986-04-10 Meditec Reinhardt Thyzel GmbH, 8501 Heroldsberg LASER TUBE FOR A GAS LASER
EP0627131A4 (en) * 1992-02-19 1994-10-12 Coherent Inc Slab laser with enhanced lifetime.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3436145A1 (en) * 1984-10-02 1986-04-10 Meditec Reinhardt Thyzel GmbH, 8501 Heroldsberg LASER TUBE FOR A GAS LASER
EP0627131A4 (en) * 1992-02-19 1994-10-12 Coherent Inc Slab laser with enhanced lifetime.
EP0627131A1 (en) * 1992-02-19 1994-12-07 Coherent Inc Slab laser with enhanced lifetime.

Also Published As

Publication number Publication date
DE2264749B2 (en) 1976-03-25

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EHJ Ceased/non-payment of the annual fee