End face coating fixture for stripe-geometry semiconductor laser and application thereof

Abstract

The invention provides an end face coating fixture for a stripe-geometry semiconductor laser and an application thereof. The end face coating fixture comprises a bar strip coating fixture and an auxiliary strip assembly tool. The bar strip coating fixture comprises a sliding part and a combination frame. The combination frame comprises a u-shaped bottom frame and an upper cross frame. Columns at the two sides of the u-shaped bottom frame are internally and respectively provided with slide channels. The two ends of the sliding part are respectively provided with an inverted T-shaped embedded part. The slide channels are matched with the T-shaped embedded parts. The u-shaped bottom frame and the central part of the sliding part are provided with replaceable bar strip clamping ends. The invention also provides an auxiliary strip assembly tool. The auxiliary strip assembly tool is cooperatively used together with the bar strip coating fixture during the bar strip assembling process. The fixture is modular in design, novel in structure, simple to machine, convenient in assembly and high in nimbleness. For bar strips of different types, the fixture is good in adaptability, strong in practicality, easy to clean and maintain, and long in service life.

Description

technical field [0001] The invention relates to a strip-shaped semiconductor laser end surface coating fixture and an application thereof, belonging to the technical field of semiconductor laser chip manufacturing technology. Background technique [0002] Strip semiconductor lasers (LD) have the advantages of small size, light weight, high conversion efficiency, and long working life. They are widely used in solid-state laser pumping, industrial processing, laser medical treatment, and military fields. They have very broad application prospects and Market value. [0003] In the process of producing bar-shaped semiconductor laser chips, the end-face coating of laser bars is one of the very important process steps. There are two main purposes for the end face coating of bar-shaped semiconductor laser bars: 1. To realize the protection of the cavity surface, avoid the laser end face from being polluted by water vapor, oil, dust, etc. in the atmospheric environment, and prevent...

AI Technical Summary

Problems solved by technology

[0012] 1. The design of the fixture structure is unreasonable. During the assembly process of the fixture to the coating furnace bracket, it is easy to cause the overall drop of the bar due to improper operation. However, the bar cannot be effectively clamped, causing the clamped bar to fall

[0013] 2. It is difficult to assemble the strips into the fixture. It is necessary to manually press the movable end of the fixture during operation, which requires high personnel skills, so the work efficiency is low, the success rate of strip loading is not high, and it is easy to cause product loss.

[0014] 3. The width or thickness of the bar end held by the fixture is fixed, and it cannot be adjusted accordingly for bars of different widths or thicknesses

Especially for the thickness of the bar, if the width of the bar is smaller than the thickness of the clamping end, the thickness of the plated film will be uneven due to the shielding of the clamping end during the coating process; on the contrary, if the width of the bar is thicker than the thickness of the clamping end If there are too many, it is easy to cause the bar to warp, increase the gap between the bars, and cause the coating material to penetrate

[0015] 4. The gap between the sliding end of the fixture and the sliding guide rail is small, and the mobility is poor. It is easy to block due to the leakage of the coating film material, causing the movable end of the fixture to be unable to move

[0016] 5. Fixtures are not conducive to cleaning and maintenance after use, resulting in serious wear, rapid decline in accuracy, and shortened service life

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