company news about Introduction to the composition and principle of laser diodes, laser modules, and fiber-coupled laser modules

1. Laser Diode

Laser Diode - LD (Laser Diode): As a simple semiconductor light source, it has the advantages of high efficiency, small size, and long life. It is characterized by good monochromaticity, good coherence, good directionality, and high brightness; some requirements cannot be directly applied to crisp and bare spots, and the beam needs to be adjusted to form a laser module, fiber laser, and laser module.

2. Laser module

The laser module has the characteristics of small size, simple structure and convenient installation. An effective spot pattern can be formed according to the needs, which can be applied to engineering production. The main structure includes: laser diode, optical lens (DOE or crystal), external structure, driver board and wire.

Among them, the laser diode works as a light source after being powered on; the optical lens (DOE or crystal) performs light spot, pattern integration or color conversion; the structural parts play the role of protection and convenience for subsequent installation; the driver board serves as a protection circuit and a safe power supply.

3. Fiber-coupled laser

For fiber-coupled lasers, the spatial optical path is coupled to the fiber output. The main features are: the light is output by the optical fiber, the optical path is more flexible, and the adjustment is more convenient; the laser spot emitted by the semiconductor chip itself is not very good, and it can be adjusted after passing through the optical fiber. Form a dot; Fiber with a large core diameter can integrate multiple laser beams together to obtain greater energy, because it is output from the same fiber, and there is no need to consider the problem of beam combining; after coupling to a single-mode fiber, you can get Very good beam quality for high precision requirements.

830nm, 850nm, 905nm, 915nm, 940nm, 980nm, 1060nm, 1310nm, 1440nm, 1480nm, 1550nm, 1600nm laser diodes. The single tube power ranges from 5mW to 5W, covering purple light, blue light, red light and infrared light.

Among them, the main uses of visible light include electric tools (barcode scanning, distance measurement), laser projection display, stage lighting, laser lighting indicator line, 3D scene application, engraving, welding and exposure and other industrial equipment, while playing the role of medical testing and other equipment . important role. Infrared light is widely used in medical treatment, optical communication, laser ranging and other fields.

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