PL75640B2 - - Google Patents

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Publication number
PL75640B2
PL75640B2 PL15593372A PL15593372A PL75640B2 PL 75640 B2 PL75640 B2 PL 75640B2 PL 15593372 A PL15593372 A PL 15593372A PL 15593372 A PL15593372 A PL 15593372A PL 75640 B2 PL75640 B2 PL 75640B2
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PL
Poland
Prior art keywords
nickel
tube
thickness
laser
power supply
Prior art date
Application number
PL15593372A
Other languages
Polish (pl)
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 filed Critical
Priority to PL15593372A priority Critical patent/PL75640B2/pl
Publication of PL75640B2 publication Critical patent/PL75640B2/pl

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Description

Pierwszenstwo: Zgloszenie ogloszono: 30.05.1973 Opis patentowy opublikowano: 20.03.1975 75640 KI. 21g,53/12 MKP HOls 3/22 Twórcy wynalazku: Wieslaw Wolinski, Wojciech Badziak, Andrzej Ko¬ walski, Dyonizy Kwasniewski Uprawniony z patentu tymczasowego: Politechnika Warszawska, Warszawa (Polska) Laser helowo-neonowy Laser helowo-neonowy o uproszczonej konstruk¬ cji z krótka rura wyladowcza posiadajaca termoka¬ tode pobudzany wyladowaniem pradu stalego.Podstawowym problemem niskiej trwalosci pra¬ cy lasera jest mala odpornosc katody na bombar¬ dowanie jonowe i zwiazane z tym pogarszanie sie jej wlasciwosci emisyjnych. Stosowane katody po¬ srednio zarzone posiadaja paste emisyjna nanie¬ siona bezposrednio na powierzchnie rurki niklo¬ wej, natomiast w konstrukcjach katod bezposrednio zarzonych pasta emisyjna pokrywa grzejnik wyko¬ nany w postaci wieloskretki wolframowej lub sia¬ tki niklowej. W tych rozwiazaniach wystepuje znaczne rozpylanie katody powodujace zmniejsza¬ nie sie cisnienia mieszaniny gazów wypelniajacych rure lasera i zwiazany z tym spadek mocy wyj¬ sciowej ograniczajac czas zycia rury. Impuls zaplo¬ nowy podawany jest na elektrode zewnetrzna wy¬ konana w postaci spirali obejmujacej kapilare ru¬ ry lasera co wymaga zastosowania stosunkowo du¬ zej energii tego impulsu, a co za tym idzie i wiek¬ szych elementów ukladu zasilania.Celem wynalazku jest zabezpieczenie duzej trwa¬ losci pracy lasera o prostej konstrukcji i malych rozmiarach.Cel ten zostal osiagniety przez zastosowanie ter¬ mokatody posrednio zarzonej, która posiada wy¬ tworzona na zewnetrznej powierzchni rurki niklo¬ wej gabczasta warstwe niklu nasycona pasta emi¬ syjna, zewnetrzna elektrode zaplonowa umieszczo¬ na w przewezeniu zbiornika katody co umozliwia zastosowanie impulsu zaplonowego o mniejszej energii a rura laserowa i zasilacz umieszczone sa w cylindrycznej obudowie zamknietej prostokatny- 5 mi plytkami.Przyklad rozwiazania konstrukcyjnego takiego lasera helowo-neonowego pokazany jest na rysun¬ ku. Termokatoda 1 z rurki niklowej 2 o srednicy wewnetrznej 2,2 mm i grubosci sciany 0,15 mm 10 jednostronnie zamknieta z polozona natryskiem warstwa 3 niklu o grubosci 0,5 mm posiadajaca strukture gabczasta nasycona jest pasta emisyjna.Zbiornik katody 4 posiada przewezenie 5, na któ¬ rym zamocowana jest elektroda zewnetrzna 6 po- 15 laczona przewodem z ukladem zasilania 7. Rura wyladowcza 8 ze zwierciadlami 9 i 10, termokato¬ da 1 i anoda 11 zamocowana jest na precie dystan¬ sowym 12 w uchwycie 13, pod którym umieszczo¬ ny jest zasilacz 7, oslonieta jest cylindryczna me- 20 talowa obudowa 14 zamknieta prostokatnymi scian¬ kami 15 i 16, które sluza równoczesnie do statycz¬ nego ustawienia lasera. 25 PL PLPriority: Application announced: May 30, 1973 Patent description was published: March 20, 1975 75 640 KI. 21g, 53/12 MKP HOls 3/22 Creators of the invention: Wieslaw Wolinski, Wojciech Badziak, Andrzej Ko¬ walski, Dyonizy Kwasniewski Authorized by a temporary patent: Warsaw University of Technology, Warsaw (Poland) Helium-neon laser Helium-neon laser with a simplified design The main problem of low laser service life is the low resistance of the cathode to ion bombardment and the associated deterioration of its emission properties. Indirectly annealed cathodes have an emission paste applied directly to the surface of the nickel tube, while in direct annealed cathode constructions the emission paste covers a heater made of a tungsten or nickel mesh. In these solutions, there is a significant sputtering of the cathode, which reduces the pressure of the gas mixture filling the laser tubes and the associated decrease in power output, limiting the life of the tube. The ignition pulse is applied to the external electrode, made in the form of a spiral that covers the capillary of the laser tube, which requires the use of relatively high energy of this pulse, and thus also larger elements of the power supply system. Simple and small-sized laser durability. in the passage of the cathode reservoir, which allows the use of a lower energy ignition pulse, and the laser tube and the power supply are placed in a cylindrical housing closed with rectangular plates. An example of a constructional solution of such helium-neon laser is shown in the drawing. Thermocathode 1 made of a nickel tube 2 with an internal diameter of 2.2 mm and a wall thickness of 0.15 mm 10 closed on one side with a sprayed layer 3 of nickel with a thickness of 0.5 mm having a spongy structure is saturated with emission paste. The cathode tank 4 has a passage 5, on which is mounted external electrode 6 connected by a wire to the power supply 7. Discharge tube 8 with mirrors 9 and 10, thermocathode 1 and anode 11 are mounted on the distance rod 12 in the holder 13, under which is placed There is a power supply 7, covered is a cylindrical metal housing 14 closed with rectangular walls 15 and 16, which simultaneously serve to statically align the laser. 25 PL PL

Claims (1)

1. Zastrzezenie patentowe Laser helowo-neonowy posiadajacy krótka rure wyladowcza, dwa zwierciadla, anode i zasilacz, znamienny tym, ze termokatoda (1) z rurki niklo- 80 wej (2) posiadajacej otwór o srednicy 1,5 do 3,5 mm 75 64075 640 i sciankach o grubosci 0,08 -r- 0,2 mm z nalozona gabczasta warstwa (3) niklu o grubosci 0,2 -:- 0,8 mm nasycona pasta emisyjna oraz elektroda zaplonowa (6) umiejscowiona w przewezeniu (5) zbiornika katody (4) z zasilaczem (7) umieszczone sa w cy¬ lindrycznej obudowie (14) zamknietej prostokatny¬ mi sciankami (15) i (16). 13 2 8 H & 1JJ 11 PZG Bydg. zam. 56/75, nakl. 110 egz. Cena 10 zl PL PL1. Patent claim A helium-neon laser having a short discharge tube, two mirrors, an anode and a power supply, characterized in that the thermocathode (1) is made of a nickel-80 tube (2) having an opening 1.5 to 3.5 mm in diameter 75 64075 640 and walls with a thickness of 0.08 -r- 0.2 mm with a spongy layer (3) of nickel with a thickness of 0.2 -: - 0.8 mm, saturated emission paste and a ignition electrode (6) located in the groove (5 ) of the cathode tank (4) with the feeder (7) are placed in a cylindrical housing (14) closed with rectangular walls (15) and (16). 13 2 8 H & 1JJ 11 PZG Bydgoszcz residing 56/75, nakl. 110 copies Price PLN 10 PL PL
PL15593372A 1972-06-10 1972-06-10 PL75640B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL15593372A PL75640B2 (en) 1972-06-10 1972-06-10

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL15593372A PL75640B2 (en) 1972-06-10 1972-06-10

Publications (1)

Publication Number Publication Date
PL75640B2 true PL75640B2 (en) 1974-12-31

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ID=19958896

Family Applications (1)

Application Number Title Priority Date Filing Date
PL15593372A PL75640B2 (en) 1972-06-10 1972-06-10

Country Status (1)

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PL (1) PL75640B2 (en)

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