Self-indicating patch semiconductor laser and packaging method thereof

Abstract

The invention relates to a self-indicating patch semiconductor laser and a packaging method thereof. The self-indicating patch semiconductor laser comprises a tube socket and a tube cap arranged on the tube socket, and in a space formed by the tube socket and the tube cap, a COS, a 45-degree right-angle semi-reflection table, a crystal and a 45-degree right-angle total reflection table are sequentially arranged on the tube socket along an optical path; two 45-degree reflective modules are arranged on the tube socket; the first 45-degree light reflection module (45-degree right-angle half-reflection table) reflects 50% of laser, so that a light path is changed by 90 degrees, the laser is emitted in a direction vertical to the tube socket, 50% of laser can also pass through the lens, a crystal is arranged on the light path, a 808nm laser is pumped into a 1064nm laser, then the 532nm laser green laser is generated through a frequency doubling crystal, and after the green laser passes through a second 45-degree reflection module (45-degree right-angle total reflection table), the light path is changed by 90 degrees and is emitted out perpendicular to the tube base.

Description

technical field [0001] The invention relates to a self-indicating patch semiconductor laser and a packaging method thereof, belonging to the technical field of packaging and manufacturing of semiconductor lasers. Background technique [0002] Semiconductor lasers have the advantages of small size, light weight, low cost, long life, selectable wavelength, stable output power, and simple power drive system. widely. Semiconductor lasers have the advantages of small size, long life, etc., and can be pumped by a simple way of injecting current. Their operating voltage and current are compatible with integrated circuits, so they can be monolithically integrated with them. Moreover, it is also possible to directly perform current modulation with a frequency up to GHz to obtain high-speed modulated laser output. Due to these advantages, semiconductor diode lasers have been widely used in laser communication, optical storage, optical gyro, laser printing, ranging and radar. In cli...

AI Technical Summary

Problems solved by technology

However, the device indicates that the light and the working laser are different lasers, and cannot be powered at the same time, which increases the possibility of malfunction due to circuit failure

[0008] To sum up, in the existing market, especially the lasers used in the market for miniaturization applications, the lasers with indicator light are generally realized by two lasers through optical beam combination. Since the two independent lasers need independent power supply, The working current required by the high-power laser and the indicator laser is inconsistent, and the leakage electrode of the high-power laser is easy to burn the indicator laser, causing equipment failure and affecting stability

Moreover, the packaging form is generally TO packaged lasers, which have a high structure and cannot meet some specific flat requirements; there are also lasers such as LED chip packages, although they meet the flat design, but the light output direction is parallel to the PCB board. , cannot meet the requirements of vertical light output, and this patch type is not as easy to replace as the existing in-line tube socket in later maintenance

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