Optics 101

Semiconductor Lasers: AlGaInP (Aluminum Gallium Indium Phosphide) Laser Properties and Applications

The aluminium gallium indium phosphide laser is a type of visible-light diode laser. Visible diode lasers emit wavelengths of red and green in the visible spectrum of electromagnetic radiation. The diode lasers consist of a semiconductor material in which the p-n junction forms the active medium.

The AlGaInP laser emits wavelengths of 0.63-0.9 µm. Each of these wavelengths is used for different applications. Electric current is used as a pumping source for these lasers.

The physical properties and applications of this laser are discussed in the sections below.

Laser Properties

Laser Properties
Laser type Solid
Pump source Electrical Discharge
Operating wavelength 0.63-0.9 µm

Physical and Chemical Properties

Physical and Chemical Properties
Chemical formula AlGaInP

Applications

The primary application AlGaInP laser is in optical disc readers, DVD players and compact disc players.

Some of the other applications of the AlGaInP laser are listed below:

  • Laser pointers
  • Gas sensors
  • Pumping sources
  • Machining

References

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