CS230893B1 - A method of generating the active surfaces of a laser absorber - Google Patents

A method of generating the active surfaces of a laser absorber Download PDF

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Publication number
CS230893B1
CS230893B1 CS831901A CS190183A CS230893B1 CS 230893 B1 CS230893 B1 CS 230893B1 CS 831901 A CS831901 A CS 831901A CS 190183 A CS190183 A CS 190183A CS 230893 B1 CS230893 B1 CS 230893B1
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Czechoslovakia
Prior art keywords
absorber
active surfaces
generating
laser
active
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CS831901A
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Czech (cs)
Slovak (sk)
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CS190183A1 (en
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Ivan Kamenicky
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Ivan Kamenicky
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Priority to CS831901A priority Critical patent/CS230893B1/en
Publication of CS190183A1 publication Critical patent/CS190183A1/en
Publication of CS230893B1 publication Critical patent/CS230893B1/en

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Abstract

Účelom vynálezu je zvýšenie účinnosti ab ­ sorbéra. Uvedeného účelu sa dosahuje vynálezom, ktorého podstatou je, že činné plochy ab ­ sorbéra sa před počiernením opracujú elek- troiskrovým obrábaním.The purpose of the invention is to increase the efficiency of the absorber. The stated purpose is achieved by the invention, the essence of which is that the active surfaces of the absorber are treated by electro-spark machining before blackening.

Description

Vynález sa týká sposobu vytvárania činných ploch absorbéra laserového žiarenia u kontinuálnych plynných laseroch.The present invention relates to a method for forming active surfaces of a laser radiation absorber in continuous gas lasers.

Počas obrábania laserovým lúčom u kontinuálnych plynných laserov je nutné prerušenie a pohltenie výstupného laserového lúča z technologických a bezpečnostných dovodov. Toto je vykonávané uzatváracou clonou, ktorá rýchlym pohybom sa presunie do dráhy výstupného nefokusovaného laserového lúča. Nefokusovaný laserový lúč sa buď priamo pohltí v uzatváracej clonke, v ktorej je zabudovaný absorbér, alebo je v nej zabudované odrazivé zrkadlo, ktoré laserov lúč odrazí do absorbéra umiestneného na laserovom zariadení mimo clonku. Absorbéry laserového žiarenia sa používajú tiež pre meranie výstupných parametrov. U pevných absorbérov sú účinné plochy riešené ako absolutné čierne telesá. Mnohonásobným odrazom laserového lúča v absolutné čiernom telese sa v ňom žiarení pohltí tak, že pri každom dopade na činné plochy absolutné čierneho telesa sa část žiarenia premení v tepelnú energiu, ktorá sa odvádza chladiacim médiom. Chladiace médium obté- ká z druhej strany činných ploch absorbéra.During laser beam machining in continuous gaseous lasers, interruption and absorption of the output laser beam from technological and safety sources is required. This is accomplished by a shutter that moves rapidly to the path of the output non-focused laser beam. The non-brazed laser beam is either directly absorbed in the shutter, which incorporates an absorber, or incorporates a reflective mirror that bounces the laser beam into an absorber placed on the laser device outside the diaphragm. Laser radiation absorbers are also used to measure output parameters. For solid absorbers, effective surfaces are designed as absolute black bodies. Multiple reflections of the laser beam in the absolute black body absorb the radiation in it, so that whenever the active black body's active surfaces are impacted, part of the radiation is converted into thermal energy that is dissipated by the cooling medium. The cooling medium bypasses the other side of the absorber's active surfaces.

Pre zvýšenie účinnosti doteraz známých absorbérov sú tieto riešené různými tvarmi absolutné čierneho telesa, materiálmi, čiernením jeho činných ploch a podobné. Nevýhodou je, že časť žiarenia sa z absorbéra odráža von, čo je nežiadúce.To increase the efficiency of the known absorbers, these are solved by various shapes of the absolute black body, the materials, the blackening of its active surfaces and the like. The disadvantage is that part of the radiation is reflected from the absorber, which is undesirable.

Vyššie uvedené nevýhody zmierňuje spůsob vytvárania činných plůch absorbéra laserového žiarenia podta vynálezu, ktorého podstatou je, že na činné plochy absorbéra před počiernením sa působí elektroiskrovým obrábaním, za účelom vytvorenia na týchto plochách velkého množstva diskrétnych absolutné čiernych teliesok.The above-mentioned disadvantages are alleviated by the method of forming the active areas of the laser radiation absorber according to the invention, the principle being that electro-spark machining is applied to the active surfaces of the absorber prior to blackening, in order to produce a large number of discrete absolute black bodies on these surfaces.

Sposob vytvárania činných plůch absorbéra laserového žiarenia sa docieli zníženie mimo arsorbér.The method of generating active laser absorber absorber pads is achieved by a reduction outside the absorber.

Spůsob vytvárania činných plůch absorbéra laserového žiarenia a vlnovej dížke 10,6 μΐη sa vykonává tak, že činné plochy absorbéra sa obrobia elektroiskrove-matovaním, čím na povrchu činných ploch absolutné čierneho telesa sa vytvoří velké množstvo malých diskrétnych absolutné čiernych telesok, ktoré sa potom počernia.The method of forming the active surfaces of the laser absorber absorber and the 10.6 μΐη wavelength is such that the active surfaces of the absorber are machined by electro-sparking, thereby creating a large number of small discrete absolute black bodies on the surface of the active black body, which are then blackened .

Claims (1)

PREDMETSUBJECT Spósob vytvárania činných ploch absorbéra laserového žiarenia upravených počiernením, vyznačujúci sa tým, že na činné plochy absorbéra před počiernením sa pósobí elekvynalezu troiskrovým obrábaním za účelom vytvorenia na týchto plochách velkého množstva diskrétnych absolutné čiernych teliesok.A method of forming blackened laser absorber working surfaces, characterized in that the black surfaces of the absorber prior to blackening are subjected to electroporation by three-step machining to produce a plurality of discrete absolute black bodies on these surfaces.
CS831901A 1983-03-21 1983-03-21 A method of generating the active surfaces of a laser absorber CS230893B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CS831901A CS230893B1 (en) 1983-03-21 1983-03-21 A method of generating the active surfaces of a laser absorber

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Application Number Priority Date Filing Date Title
CS831901A CS230893B1 (en) 1983-03-21 1983-03-21 A method of generating the active surfaces of a laser absorber

Publications (2)

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CS190183A1 CS190183A1 (en) 1984-01-16
CS230893B1 true CS230893B1 (en) 1984-08-13

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