• VCSEL laser diode advantages and classification.
    VCSEL laser diode advantages and classification.
    The full name of VCESL is a vertical cavity surface emitting laser, which is a semiconductor laser structure in which an optical resonant cavity is formed in the direction perpendicular to the semiconductor epitaxial wafer and the laser beam emitted is perpendicular to the surface of the substrate. Compared with LEDs and edge-emitting lasers EEL, VCSELs are superior in terms of...
    2022-05-19
  • Laser distance measuring
    Laser distance measuring
    Laser distance measuring is measured using a laser as a light source.It is divided into continuous laser and pulse laser according to the mode of laser operation.Gas lasers like helium-neon, argon ion, krypton cadmium and so on work in a continuous output state for phase laser ranging, dual heterogeneous GaAs semiconductor laser for infrared ranging; solid laser such as ruby, n...
    2022-05-16
  • Semiconductor laser applications
    Semiconductor laser applications
    Semiconductor lasers are a type of lasers that mature earlier and are developing rapidly. Because of its wide wavelength range, simple manufacture, low cost, easy mass production, and because of its small size, light weight, and long life, its variety develops quickly and its application The range is wide, and there are currently more than 300 species.
    2022-05-09
  • VCSEL laser diode advantages and classification.
    VCSEL laser diode advantages and classification.
    The full name of VCESL is a vertical cavity surface emitting laser, which is a semiconductor laser structure in which an optical resonant cavity is formed in the direction perpendicular to the semiconductor epitaxial wafer and the laser beam emitted is perpendicular to the surface of the substrate. Compared with LEDs and edge-emitting lasers EEL, VCSELs are superior in terms of...
    2022-05-05
  • Fiber cut-off wavelength
    Fiber cut-off wavelength
    The fiber cut-off wavelength is to ensure that only one mode exists in the fiber. One of the main transmission characteristics of single-mode fiber is the cut-off wavelength, which is of great significance for fiber optic cable manufacturers and users of fiber optic cables to design and use fiber optic transmission systems.
    2022-04-24
  • The principle and application of laser sensor
    The principle and application of laser sensor
    Laser sensors are sensors that use laser technology to measure. It consists of a laser, a laser detector and a measuring circuit. Laser sensor is a new type of measuring instrument. Its advantages are that it can realize non-contact long-distance measurement, fast speed, high precision, large range, strong anti-light and electrical interference ability, etc.
    2022-04-18
  • Semiconductor Optical Amplifiers (SOA)
    Semiconductor Optical Amplifiers (SOA)
    A semiconductor optical amplifier (SOA), also known as a laser amplifier, is an active medium of a semiconductor laser. In other words, an SOA is a laser diode without or with very low optical feedback. An electric current is externally applied to the laser device that excites electrons in the active region. When photons travel through the active region it can cause these elect...
    2022-04-11
  • FBG optical sensor
    FBG optical sensor
    FBG optical sensor, fiber Bragg grating sensor, is a kind of optical fiber sensor with the highest frequency and widest range. This sensor can change the wavelength of the reflected light wave according to the change of ambient temperature and/or strain. Fiber Bragg gratings use holographic interferometry or phase masking to expose a small section of light-sensitive fiber to a ...
    2022-04-06
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