A method of manufacturing the solid-state laser illuminator

 

A method of manufacturing a solid-state illuminator laser, containing the reflector is made of metal foil with a mirror surface, includes obtaining a metal foil with a mirror surface by chemical silvering quartz substrate, followed by deposition by electroplating layers of copper and Nickel and remove the foil from the quartz substrate. The reflector is made of metal foil mounted in the light housing to provide thermal contact between the metal foil and the housing. Is provided a method of manufacturing besidesthe conductive cooled solid-state illuminator laser lamp-pumped able to operate the laser in the frequency range needed for tasks, telemetrically and target acquisition in high technology and low cost products, as well as the method allows to reduce the weight and increase reliability compared to the same equipment that uses liquid cooling laser emitters. 2 Il.

The invention relates to laser technology and can be used in the manufacture of luminaires solid-state lasers.

An integral part of illuminators t is diffuse), ensuring the highest possible transmission of radiation from the flashlamp to the active element.

When creating small lasers operating in the frequency mode without forced cooling, reflector are required to provide good heat removal from the cavity of the reflector.

A known method of manufacturing a solid-state illuminator laser, comprising applying a silver coating on a quartz tube or monoblock outside diameter and installing it in the light housing. When using this illuminator is not provided the required heat from the cavity due to the low coefficient of thermal conductivity of quartz - 1.2 W/mTo [1].

A known method of manufacturing a solid-state illuminator laser, comprising applying a mirror coating on the external surface of the tube or candy bar from sapphire, the conductivity of which is 35 W/mTo, with the subsequent installation of such a reflector in the light housing [2]. However, technologically manufacturing reflector sapphire laborious, expensive and time-consuming process, and the effectiveness of such a reflector is substantially lower because of losses by absorption in the material and the reflector is produced by an electroplating silver plating metal housing. In this case, the reflection coefficient depends on the quality of the surface, to be plated, and the cleanliness of carrying out the process. Silver plated surface thus require additional protection against darkening, which reduces the reflection coefficient, and the effective date of such a reflector is negligible.

The closest in technical essence of the present invention is a method of manufacturing a solid-state illuminator laser, containing the reflector is made of metal (silver or aluminum) foil with a mirror surface [4].

The disadvantage of this method is the necessity of applying a protective coating on the reflective surface, and relatively low coefficients of reflection: for silver - 92...93%, aluminum up to 90%.

The present invention is to provide a method of manufacturing besidesthe conductive cooled solid-state illuminator laser lamp-pumped able to operate the laser in the frequency range required to meet telemetrically and target acquisition in high technology and low cost products.

The problem is solved due to the fact that the offer is with a mirror surface, the metal foil with a mirror surface obtained by chemical silvering quartz substrate, followed by deposition by electroplating layers of copper and Nickel and remove the foil from the quartz substrate, and a reflector mounted in the light housing to provide a thermal contact with thermally conductive glue, paste, etc.) between the metal foil and the housing. Thus, through the application of a metal foil and the presence of thermal contact between the foil and the housing is ensured by the transfer of heat from the heat storage body illuminator.

Known technology of applying a mirror silver coating by chemical means on quartz substrates [5]. To obtain high quality coatings shall meet the following basic conditions:

- polished, thoroughly cleaned the dirt from the surface of the substrate;

- protection of the substrate from the formation of stable oxides from the end of the polishing process to begin chemical silvering;

- clean serebristo solution and the concentration of silver nitrate;

availability of high - quality coatings of copper and Nickel.

Performed by known coating technology has Regetel installed in the heat-accumulating body of the illuminator through a thermally conductive adhesive, paste, compound, and so on, providing thermal contact between the metal foil and the housing.

Received by the specified method, the foil has a high reflectance in a wide spectral range, high mechanical strength and flexibility, allowing you to paste it on the inside of the lights of arbitrary shape (for example, cylindrical, elliptical, circular cross-section). Silver coated foil has also improved chemical resistance because of the high purity of the deposited silver or transfer with a quartz substrate monomolecular protective layer. Accelerated testing has shown that in the pressurized besidesthe illuminator foil can keep its properties for at least 10 years.

In Fig.1 shows a solid-state illuminator laser, manufactured by the proposed method. The illuminator 1 contains the reflector 2 of the metal foil consisting of a silver mirror layer 3, layer 4 copper and Nickel 5. Thermal contact is ensured in this case by using a thermally conductive adhesive 6.

In Fig.2 shows the spectral dependence of the reflectance of the mirror surface of the metal foil obtained on the substrate of the I, thereby reducing heating the active element, thus improving the operation of the active element.

The measurement of the reflection coefficient thus obtained foil was produced by acousto-optic spectrophotometer AOS-3 SL in the wavelength range 370-1100 nm.

The proposed method for the manufacture of luminaires containing the reflector is made of a metal foil that allows you to create solid-state lasers, small and medium power without forced cooling operating in cyclic mode for a long time in a wide range of temperatures without loss of efficiency, for tasks ranging and targeting. Block illuminator may represent a metal heat-retaining item of arbitrary size and shape.

A specific example is the illuminator of the solid-state laser containing the reflector is made of metal foil with silver mirror surface, installed in the emitter of the finder, in which the active medium is used yttrium aluminium garnet with neodymium YAG Nd3+sizeH mm, and the pumping source is a lamp IEF 2-3/35. The use of the proposed illuminator helped to ensure reliable operation is had when the loop duration to 20 C.

The proposed method of manufacturing the solid-state illuminator laser can be used to create small equipment type frequency range finders, target designators, and so on, and can significantly reduce their weight and improve reliability compared to the same equipment that uses liquid cooling laser emitters. The cost of the reflector of the metal foil below the cost of quartz or sapphire monoblock more than 10 times.

Sources of information

1. Belostotsky B. R. fundamentals of laser technology. Solid-state laser. - M., Soviet radio, 1972, page 23.

2. Optical journal, volume 67, No. 8, 2000.

3. Zverev, M., Golyaev Y. D. Lasers crystals and their application. - M, Radio and communications, 1994, pp. 245-246.

4. Mikaelyan A. L., Ter-Mikaelian, M. L., Turks Y., Optical quantum generators on a solid. - M., Soviet radio, 1967, pp. 103 - a prototype.

5. Bardin, A. N. The technology of optical glass), High school, 1963, pp. 461-465.

Claims

A method of manufacturing a solid-state illuminator laser, containing the reflector is made of metal foil with a mirror surface, characterized in that the metal foil with a mirror surface poluchaeti and Nickel and remove foil with a quartz substrate, moreover, the reflector is mounted in the light housing to provide thermal contact between the metal foil and the housing.

 

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FIELD: optical engineering.

SUBSTANCE: at least two dielectric layers are produced with preset thickness. Layers are disposed one onto the other to form pack of layers. Thickness of layer packs is subject to reduction and thicknesses of separate layers are similarly reduced by means of deforming layer packs to keep relation of thicknesses or relation of thicknesses of layers. Layer pack is disposed between two carrying layers before subjecting the layers to deformation. At least one carrying layer is formed from several separate layers, which are supposed to be disposed subsequently at the end of process of partial deformation at any previous layer of carrying layer. Separate layers of carrying layer can be overlayed onto previous separate layers of carrying layer.

EFFECT: simplified process of manufacture; improved reflection factor.

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