Metal cathode for continuous krypton lamp
A metal cathode and krypton lamp technology, applied in the field of light sources, can solve the problems of low conversion efficiency of pump lamps, and achieve the effects of easy heat energy distribution, low work function, and high melting point
Inactive Publication Date: 2010-11-10
上海大愚光源科技有限公司
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Problems solved by technology
The pump light source used for Nd.YAG activated material crystals is usually krypton lamp or xenon lamp. Since the emission spectrum of the pump lamp is a broadband continuum, the absorption band of Nd.YAG is only near the long-wave near-infrared, and only part of the spectral peak is covered by Nd. Ion absorption, so most of the energy is usually lost as heat energy, and the conversion efficiency of pump lamps is generally not high
Method used
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Embodiment Construction
[0015] The metal cathode of the present invention can be used in the discharge cathode of the solid-state laser pumping light source krypton lamp tube.
[0016] The metal cathode for the continuous krypton lamp of the present invention is made of tungsten alloy with low work function, high melting point, and high hardness; at the same time, it adopts a three-stage cathode structure design, that is, the three parts of the discharge tip, the connecting rod, and the rear end of the electrode are connected end to end in sequence. composition. Among them, the tip of the discharge tip is designed as a conical tip, which is easy to form a peak current density at the tip, which is conducive to electron emission and stable discharge; the back end of the electrode is designed to match the size of the discharge tube, which is convenient for the discharge tube of sealing.
[0017] Among them: the electrode size is preferably two examples as shown in the following table (unit: mm)
[001...
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The invention belongs to the technical field of light sources and in particular relates to a metal cathode for a continuous krypton lamp. The metal cathode is mainly characterized in that: the metal cathode is made of a tungsten alloy material and is formed by connecting a discharging top end, a connecting rod and an electrode rear end sequentially end to end; the head of the discharging top end is designed into a conical tip shape; and the electrode rear end is designed into a cylindrical shape with a size matched with that of a discharge tube. The cathode has the characteristics of high melting point, high temperature resistance, high electron emission property, large current resistance, capacity of being started easily and the like. The krypton lamp using the electrode has the advantages of high radiation power, stable radiation spectrum, long service life of the light source and the like.
Description
technical field [0001] The invention belongs to the technical field of light sources, and specifically relates to a metal cathode for a continuous krypton lamp, in particular to a tungsten alloy discharge cathode with a three-stage structure, the metal cathode is configured for a continuous krypton lamp used as a solid laser pumping light source in the light source. Background technique [0002] With the rapid development of the national economy, laser technology is rapidly and widely used in daily production and life. In automotive, medical, beauty and other fields such as marking, engraving, cutting, punching, welding, hair removal, moisturizing and other purposes. The most important core to determine the efficiency of a laser is the pump light source, and the pump light source is mainly evaluated by three indicators: pump efficiency, stability and lifetime. [0003] YAG laser is currently the main domestic solid-state laser, and its active material is Nd.YAG (yttrium al...
Claims
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CPCH01J61/0732
Inventor 王朝顺居家奇陈大华马瑛
Owner 上海大愚光源科技有限公司