Specialty Products

Quadrant Photodiodes

Quadrant Photodiodes

The InGaAs Quadrant Photodiode consists of four separate active regions on one detector. Each segment gives a current output related to the location of light on the detector. This configuration is ideal for precise position detection and alignment applications.


  • Standard packages (TO-46, TO-5, and SMT)
  • Spectral response from 800 nm to 1700 nm
  • Chip active diameters: 0.5 mm, 1.0 mm, 1.5 mm, 2.0 mm and 3.0 mm
  • High sensitivity
  • Low crosstalk
  • High shunt resistance
  • Low dark current
  • Low capacitance for high segment bandwidth
  • Common cathode
  • Custom configurations available with tailored packaging, coatings, filters, and more.


  • Beam alignment
  • Laser guidance
  • Optical tweezers
  • Beam profiling

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