Annular electrode pulsed xenon lamp

Abstract

A ring electrode pulsed xenon lamp, comprising an outer tube, an inner tube, a lamp head, electrodes and lead wires, is characterized in that the electrodes are ring electrodes, the inner tube is a closed quartz glass tube and is not connected to the outer tube; the end of the inner tube passes through the ring electrode head and is fixed by electrode bases at both ends. The pulsed xenon lamp of the present invention has a high electro-optical conversion efficiency and is particularly suitable for the preparation of high-power pulsed xenon lamps.

Description

Technical Field

[0001] The present invention relates to a pump light source for high-power solid-state lasers, in particular to an annular electrode pulsed xenon lamp. Background Art

[0002] Coaxial pulsed xenon lamps are commonly used as pump sources for fuel lasers. ZL92112658.1 discloses a new type of coaxial pulsed flash lamp, which consists of three parts: a coaxial pulsed flash lamp body, a cylindrical coaxial fluid buffer, and a cylindrical coaxial external fluid cooling jacket. CN 104051222 A discloses a new type of annular cross-section cavity discharge pulsed xenon lamp, which consists of an outer tube and an inner core of a coaxial pulsed xenon lamp. The design of this invention overcomes the disadvantages of existing laser pump light sources, thereby providing an optical pump light source with strong practicability, high energy, short pulses, and long life.

[0003] In the preparation process of prior art coaxial pulsed xenon lamps, the connection between the outer tube and the inner tube is difficult, and the annular discharge cross-section is incomplete. Summary of the Invention

[0004] The purpose of the present invention is to provide an annular electrode pulsed xenon lamp, which has a high electro-optical conversion efficiency and is particularly suitable for preparing high-power pulsed xenon lamps.

[0005] The technical solution of the present invention is as follows:

[0006] An annular electrode pulsed xenon lamp, which includes an outer tube, an inner tube, a lamp head, an electrode, and a lead wire. The feature is that the electrode is an annular electrode, the inner tube is a closed quartz glass tube, the inner tube is placed inside the outer tube but not connected to the outer tube, both ends of the inner tube pass through the annular electrode head and are fixed by electrode bases at both ends, the electrode is sealed to the outer tube, the lamp head is connected to the electrode, and the lead wire is connected to the lamp head.

[0007] A thin film with a high reflectivity is plated on the outer surface of the inner tube.

[0008] The sealing of the electrode to the outer tube adopts transition glass sealing, low-temperature metal sealing, or high-temperature metal sealing.

[0009] Technical Effects of the Present Invention

[0010] Compared with the prior art, the key of the present invention is that the inner tube is closed, fixed by electrode bases at both ends, and not connected to the outer tube, so the preparation is simple, and a complete annular cross-section discharge cavity can be formed; the electrode adopts an annular electrode head, which improves the radiation efficiency and increases the light radiation output.

[0011] The present invention is particularly suitable for preparing high-power pulsed xenon lamps. Brief Description of the Drawings

[0012] Figure 1 is a schematic structural view of the annular electrode pulsed xenon lamp of the present invention.

[0013] Figure 2 is a schematic cross-sectional view of the annular electrode of the present invention.

[0014] Figure 3 is a schematic view of the electrode fixing inner tube.

[0015] 1. Outer tube; 2. Inner tube; 3. Lamp head; 4. Electrode; 5. Lead wire. Detailed Description of the Invention

[0016] The present invention will be further described below in conjunction with examples and drawings. The technical solutions in the embodiments of the present invention are clearly and completely described, but the protection scope of the present invention should not be limited.

[0017] First, please refer to Figure 1 , Figure 2 , Figure 3 , Figure 1 is a schematic structural view of the high-pressure and high-power pulsed xenon lamp in the embodiment of the annular electrode pulsed xenon lamp of the present invention, Figure 2 is a schematic cross-sectional view of the annular electrode of the present invention, Figure 3 is a schematic view of the electrode base fixing the inner tube. It can be seen from the figure that the annular electrode pulsed xenon lamp of the present invention includes an outer tube 1, an inner tube 2, a lamp head 3, an electrode 4 and a lead wire 5. The feature is that the electrode 4 is an annular electrode, the inner tube 2 is a closed quartz glass tube, the inner tube 2 is placed inside the outer tube 1 but not connected to the outer tube 1, both ends of the inner tube 2 pass through the annular electrode head and are fixed by the electrode bases at both ends, the electrode 4 is sealed with the outer tube 1, the lamp head 3 is connected to the electrode 4, and the lead wire 5 is connected to the lamp head 3.

[0018] A film with a high reflectivity is plated on the outer surface of the inner tube 2.

[0019] The sealing of the electrode 4 and the outer tube 1 adopts transition glass sealing, low-temperature metal sealing or high-temperature metal sealing.

[0020] The present invention uses the mutual fusion between quartz glass bodies and the welding between metals to manufacture an annular electrode pulsed xenon lamp. The vacuum core tube effectively avoids the phenomenon that the discharge plasma near the axis is absorbed by the outer layer plasma during the discharge process of the straight tube lamp, and can improve the plasma light radiation efficiency.

[0021] The annular electrode pulsed xenon lamp of the present invention has been verified in practice to have good impact resistance, high load energy, and high electro-optical conversion efficiency, providing a pulsed xenon lamp that can be safely and reliably used in high-power laser devices.

[0022] Example 1:

[0023] In this example, a composite functional quartz glass is used to prepare an annular electrode pulsed xenon lamp for high-pressure and high-power pulsed xenon lamps. The electrode spacing is 830 mm, the inner diameter of the outer tube 1 is 42 mm, the wall thickness is 3 mm, the outer diameter of the inner tube 2 is 24 mm, and the wall thickness is 2 mm. High-purity xenon gas of 120 Torr is filled between the outer tube 1 and the inner tube 2. The electrodes are made of cerium tungsten material, and the lamp head adopts a high-temperature metal sealing process. The total length of the xenon lamp is 1130 mm.

[0024] The test results show that the electro-optical conversion efficiency of the annular electrode pulsed xenon lamp of the present invention is 5%-10% higher than that of a common straight-tube pulsed xenon lamp under the same discharge conditions. The annular electrode pulsed xenon lamp of the present invention has high electro-optical conversion efficiency and working stability.

Claims

1. A ring electrode pulsed xenon lamp, which includes an outer tube (1), an inner tube (2), a lamp head (3), an electrode (4) and a lead wire (5). Characterized in that the electrode (4) is a ring electrode, the inner tube (2) is a closed quartz glass tube, the inner tube (2) is placed inside the outer tube (1) but not connected to the outer tube (1), both ends of the inner tube (2) pass through the ring electrode head and are fixed by the electrode bases at both ends, the electrode (4) is sealed to the outer tube (1), the lamp head (3) is connected to the electrode (4), and the lead wire (5) is connected to the lamp head (3).

2. The ring electrode pulsed xenon lamp according to claim 1, Characterized in that a film with a high reflectivity is plated on the outer surface of the inner tube (2).

3. The ring electrode pulsed xenon lamp according to claim 1 or 2, Characterized in that the sealing of the electrode (4) to the outer tube (1) is carried out by means of transition glass sealing, low-temperature metal sealing or high-temperature metal sealing.

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