What is a semiconductor laser?
Release time：2025.11.28
Views：28In summary, semiconductor laser is a device that uses semiconductor materials as the working substance and excites the laser through current injection. It is currently the most common, widely used, and smallest type of laser.
You can imagine it as an "electronic diode" with a very precise structure that can emit pure monochromatic light. The vast majority of lasers we come into contact with in our daily lives come from it, such as laser pens, fiber optic communications, Blue ray players, and so on.
Main Features:
Small size and light weight: The chip size can be as small as rice grains or even needle tips.
High efficiency: The electro-optical conversion efficiency is high, usually up to 10% -50%, energy-saving, and the heat generation is relatively controllable.
Long lifespan: Working hours can reach tens of thousands to hundreds of thousands of hours.
Easy to drive: usually only requires low voltage, direct current drive, easy to modulate.
Wide wavelength range: By changing the composition of semiconductor materials, a very wide wavelength range from ultraviolet to infrared can be obtained.
Easy to mass produce, low cost: using a process similar to integrated circuits, suitable for large-scale manufacturing.
Semiconductor lasers are one of the core components of modern optoelectronic technology. With its huge advantages of miniaturization, high efficiency, long life and mass production, it plays an indispensable role from the backbone of global Internet data transmission, to the face recognition of mobile phones in our pockets, to the advanced manufacturing in factories. It is the most practical and economical solution for efficiently converting electrical energy into specific wavelength lasers.
You can imagine it as an "electronic diode" with a very precise structure that can emit pure monochromatic light. The vast majority of lasers we come into contact with in our daily lives come from it, such as laser pens, fiber optic communications, Blue ray players, and so on.
Main Features:
Small size and light weight: The chip size can be as small as rice grains or even needle tips.
High efficiency: The electro-optical conversion efficiency is high, usually up to 10% -50%, energy-saving, and the heat generation is relatively controllable.
Long lifespan: Working hours can reach tens of thousands to hundreds of thousands of hours.
Easy to drive: usually only requires low voltage, direct current drive, easy to modulate.
Wide wavelength range: By changing the composition of semiconductor materials, a very wide wavelength range from ultraviolet to infrared can be obtained.
Easy to mass produce, low cost: using a process similar to integrated circuits, suitable for large-scale manufacturing.
Semiconductor lasers are one of the core components of modern optoelectronic technology. With its huge advantages of miniaturization, high efficiency, long life and mass production, it plays an indispensable role from the backbone of global Internet data transmission, to the face recognition of mobile phones in our pockets, to the advanced manufacturing in factories. It is the most practical and economical solution for efficiently converting electrical energy into specific wavelength lasers.
