Semiconductor laser diodes also refer to semiconductor lasers or laser diodes. A semiconductor laser diode (LD) is a laser used in conjunction with optical fibers to construct optical communication systems. It can be directly used as a light source for optical communication, and can also be used as a pump source for lasers and amplifiers. It has a very important position in the field of...

A laser diode is a kind of laser generator. The working material is a semiconductor, which belongs to a solid-state laser. Most of the laser diodes are similar in structure to general diodes. A laser diode is essentially a semiconductor diode. According to whether the PN junction materials are the same, laser diodes can be divided into homojunction, single heterojunction (SH), double...

A laser velocimeter is a device that measures the moving distance of the object to be measured within a certain time interval through laser emission, and calculates the moving speed of the object. Public transport by rail or tram emphasizes easier, more advanced and safer monitoring and maintenance. Accurate measurements of field data by rail inspection systems ensure extended rail...

The difference between the laser flashlight and the general laser pointer and the stylus is that its shell is similar to the ordinary flashlight, the volume is larger, and the power is usually larger. The visible laser is designed as a portable, hand-held, laser module (diode) processing pen-shaped transmitter. Laser flashlights belong to semiconductor lasers, which are different from...

In recent years, the manufacturing industry has developed in the direction of informatization, and the manufacturing technology has been steadily improved in the direction of automatic intelligence and high added value. The assembly positioning technology in the manufacturing industry has undergone a transition from manual positioning assembly to automated positioning assembly, and developed...

Photovoltaic energy plays an important role as a renewable energy source in discussions on solving future energy problems. Technological progress is a crucial prerequisite for achieving electricity parity, such as reducing the cost of photovoltaic power generation to close to the cost of traditional energy through technological progress. At present, crystalline silicon solar cells are the...

The birth of the laser cutting machine has given us an unprecedented improvement in the development of our industry. If there is no laser cutting machine, how will many complex products in our lives be born? What will happen to our national economy? Everything is unimaginable! Since the laser cutting machine has played such a big role in our economy and life, do you know the various components...

Laser diode (Laser Diodes, LD) is a kind of laser generator. Its working material is semiconductor, which belongs to solid-state laser. Most of the laser diodes are similar in structure to general diodes. Since the laser diode is working, the energy conversion process of electrons only involves two energy levels, and there is no energy loss caused by the indirect band gap, so the efficiency is...

Laser cutting is to focus the laser emitted from the laser into a high power density laser beam through the optical path system. The laser beam is irradiated on the surface of the workpiece, making the workpiece reach the melting point or boiling point, while the high-pressure gas coaxial with the beam blows the molten or vaporized metal away. With the movement of the relative position of the...

DOE(Diffractive optical elements) are emerging optical elements that have developed vigorously in recent years. DOE usually adopts the micro-nano etching process to form two-dimensional diffraction units. Each diffraction unit can have a specific morphology, refractive index, etc., so as to finely control the phase distribution of the laser wavefront. The laser light diffracts after...