Novel fixed electrode needle and semiconductor laser

Abstract

The utility model relates to the technical field of semiconductor lasers, in particular to a novel fixed electrode needle and a semiconductor laser, the novel fixed electrode needle comprises an electrode needle, the electrode needle comprises a metal rod and a pin integrally arranged at one end of the metal rod, and an insulating sleeve is fixed outside the metal rod in a sealing manner. The semiconductor laser comprises an outer shell and a novel fixed electrode needle, a mounting hole is formed in the side wall of the outer shell in a penetrating mode, an insulation sleeve is fixed in the mounting hole in a sealed mode, a step part used for limiting the insulation sleeve is arranged at the end, close to the interior of the outer shell, of the mounting hole, and a pin is located on the inner side of the outer shell. The insulating sleeve is directly sealed and fixed on the outer side of the electrode needle, and then the insulating sleeve is sealed and fixed with the mounting hole of the outer shell, so that the sealing performance is ensured, the assembly is convenient, and the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of semiconductor laser, concretely to a novel fixed electrode needle and semiconductor laser. BACKGROUND

[0002] Semiconductor laser is the device that produces laser with certain semiconductor material as working substance. Its working principle is that non-equilibrium carrier particle number inversion is realized between the energy band (conduction band and valence band) of semiconductor material or the energy band of semiconductor material and impurity (acceptor or donor) energy level through certain excitation mode, and when a large number of electrons and holes in particle number inversion state recombine, stimulated emission occurs.

[0003] The electrode of prior art semiconductor laser is sintered by ceramic and metal, and finally the finished product is welded to the laser shell to ensure air tightness and insulation. For details, refer to the attached Figure 3 The outer side wall of the electrode needle (1) is sequentially fixed with a first metal ring (4), a second metal ring (5) and a metallized ceramic (6), the first metal ring (4) is fixedly connected with the laser shell after being sleeved with an insulating sleeve, the process is relatively complex, and the production cost is relatively high. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a novel fixed electrode needle and semiconductor laser to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a novel fixed electrode needle, comprising an electrode needle, the electrode needle comprises a metal rod and a pin foot integrally arranged at one end of the metal rod, and an insulating sleeve is fixedly sealed on the outside of the metal rod.

[0006] Further, the metal rod and the insulating sleeve are in interference fit.

[0007] Further, the metal rod and the insulating sleeve are fixed by gluing.

[0008] Further, the insulating sleeve is welded on the metal rod.

[0009] Further, the insulating sleeve is cast on the metal rod.

[0010] Further, the material of the insulating sleeve is PEEK.

[0011] A semiconductor laser comprises a shell body and a novel fixed electrode needle, a mounting hole is arranged through the side wall of the shell body, the insulating sleeve is fixedly sealed in the mounting hole, a step portion for limiting the insulating sleeve is arranged at the end of the mounting hole close to the inside of the shell body, and the pin foot is located on the inside of the shell body.

[0012] Further, the insulating sleeve and the mounting hole are fixed by interference fit.

[0013] Further, the insulating sleeve and the mounting hole are fixed by adhesive.

[0014] Compared with the prior art, the novel fixed electrode needle and the semiconductor laser have the advantages that the insulating sleeve is directly sealed and fixed outside the electrode needle, and the insulating sleeve is sealed and fixed with the mounting hole of the outer shell body, so that the sealing property is ensured, the assembly is facilitated, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a three-dimensional structural schematic view of the electrode needle of the utility model;

[0016] Figure 2 is a sectional structural schematic view of the electrode needle in an assembled state of the utility model;

[0017] Figure 3 is a structural schematic view of the electrode needle in the prior art.

[0018] In the drawing: 1, electrode needle; 101, metal rod; 102, pin; 2, insulating sleeve; 3, outer shell body; 301, mounting hole; 302, step portion; 4, first metal ring; 5, second metal ring; 6, metalized ceramic. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model, and it should be noted that, in the description of the utility model, the description of terms "first", "second" and the like is only for the purpose of description, and does not particularly indicate the order or sequence, nor is it used to limit the utility model, which is only used to distinguish the components or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features with "first" and "second" can explicitly or implicitly include at least one feature. In order to cover the non-exclusive inclusion, the terms "include" and any variations thereof in the description, claims and above-mentioned drawings of the utility model are intended to cover the non-exclusive inclusion.

[0020] In the description of the utility model, it is necessary to explain that, unless there is definite stipulation and limitation, the term "installation", "connection", "connect", "arrangement" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, can be mechanical connection, also can be electrical connection, can be direct connection, also can be indirect connection through intermediate medium, can be the intercommunication of two elements. For ordinary skilled person in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to specific circumstances. In addition, in the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like is the orientation or position relationship based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and is not indicated or implied that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, so it can not be understood as a limitation on the utility model.

[0021] Please refer to Figures 1-2 The utility model provides an embodiment: a novel fixed electrode needle, including electrode needle 1, electrode needle 1 includes metal pole 101 and the needle foot 102 of the integral setting in the one end of metal pole 101, metal pole 101 specifically is cylindrical structure, needle foot 102 is flat metal sheet, the outside sealing fixed of metal pole 101 has insulating sleeve 2, insulating sleeve 2 specifically can be cylindrical tubular structure, its material specifically is PEEK, has the performance of high temperature resistance, in this embodiment, metal pole 101 and insulating sleeve 2 between interference fit, further, metal pole 101 and insulating sleeve 2 between also can be fixed through gluing, or insulating sleeve 2 is welded fixed or pouring on metal pole 101, make metal pole 101 and insulating sleeve 2 between relative fixed, ensure airtightness.

[0022] The embodiment also provides a semiconductor laser, including shell 3 and novel fixed electrode needle, the specific structure of shell 3 is prior art, and here is not repeated, electrode needle 1 specifically sets up two, the side wall of shell 3 is provided with mounting hole 301, insulating sleeve 2 is sealed and fixed in the inside of mounting hole 301, and the end of mounting hole 301 close to the inside of shell 3 is provided with step portion 302 for limiting insulating sleeve 2, needle foot 102 is located at the inside of shell 3, specifically, insulating sleeve 2 and mounting hole 301 between interference fit, further, insulating sleeve 2 and mounting hole 301 between also can be fixed through gluing, make insulating sleeve 2 and shell 3 between relative fixed, ensure airtightness.

[0023] It is apparent for a person skilled in the art that the present application is not restricted to the details of the above exemplary embodiments, but that it can be implemented in other concrete forms without departing from the spirit or the essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary only, and not limiting, the scope of the present application being defined by the appended claims rather than the above description, and all changes coming within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference signs in the claims should not be construed as limiting the claims concerned.

Claims

1. A semiconductor laser, characterized by: The utility model relates to an electrode needle, which comprises an outer shell (3) and an electrode needle (1), wherein the electrode needle (1) comprises a metal rod (101) and a needle foot (102) integrally arranged at one end of the metal rod (101), and an insulating sleeve (2) is sealingly fixed to the outside of the metal rod (101). A mounting hole (301) is formed through the side wall of the outer shell (3), the insulating sleeve (2) is sealingly fixed in the mounting hole (301), and a step portion (302) for limiting the insulating sleeve (2) is arranged at the end of the mounting hole (301) close to the inside of the outer shell (3), and the needle foot (102) is located inside the outer shell (3).

2. The semiconductor laser of claim 1, wherein: The insulating sleeve (2) is in interference fit with the mounting hole (301).

3. The semiconductor laser of claim 1, wherein: The insulating sleeve (2) and the mounting hole (301) are fixed by adhesive.

4. The semiconductor laser of claim 1, wherein: The metal rod (101) and the insulating sleeve (2) are in interference fit.

5. The semiconductor laser of claim 1, wherein: The metal rod (101) and the insulating sleeve (2) are fixed by adhesive.

6. The semiconductor laser of claim 1, wherein: The insulating sleeve (2) is welded to the metal rod (101).

7. The semiconductor laser of claim 1, wherein: The insulating sleeve (2) is cast on the metal rod (101).

8. The semiconductor laser of claim 1, wherein: The material of the insulating sleeve (2) is PEEK.

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