Quadrant Photodiodes

Our standard 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.

Features

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

Applications

  • Laser Guidance for Free Space Optical Communication
  • Optical Tweezers
  • Beam Profiling

Optoelectronic Characteristics @ 23 ºC ± 2 ºC

Active Diameter 0.5 mm 1 mm 1.5 mm 2 mm 3 mm
Spectral Response Range 800-1700 800-1700 800-1700 800-1700 800-1700 nm
Peak Wavelength (typ) 1550 1550 1550 1550 1550 nm
Responsivity @ 850 nm (min/typ) 0.2 / 0.27 0.2 / 0.27 0.2 / 0.27 0.2 / 0.27 0.2 / 0.27 A/W
Responsivity @ 1300 nm (min/typ) 0.85 / 1.0 0.85 / 1.0 0.85 / 1.0 0.85 / 1.0 0.85 / 1.0 A/W
Responsivity @ 1550 nm (min/typ) 0.93 / 1.1 0.93 / 1.1 0.93 / 1.1 0.93 / 1.1 0.93 / 1.1 A/W
Dark Current @ VR (typical) 0.1 / 2 @ 5 V 0.2 / 2 @ 5 V 0.4 / 4 @ 5 V 0.5 / 5 @ 5 V 1 / 8 @ 2 V nA
Shunt Resistance @ 10 mV (min/typ) not available 200 typ 145 typ 50 / 80 20 / 60
Capacitance @ 0 V (typ/max) 10 typ 20 / 45 85 / 95 120 / 140 220 / 400 pF
Capacitance @ VR (typ/max) 4 / 6 @ 5 V 10 / 15 @ 5 V 20 / 30 @ 5 V 45 / 80 @ 5 V 100 / 200 @ 2 V pF
NEP @ λPEAK @ VR (typ) 5.2 7.3 10.3 11.5 16.3 fW/Hz1/2
Linearity (± 0.2 dB) @ 0 V (typ) +6 +6 +6 +6 +6 dBm
TO Packages TO-46 TO-46, TO-5 TO-46, TO-5 TO-5 TO-5
Leadless Ceramic Packages LCC-6 LCC-6 LCC-6 LCC-6 LCC-28
Storage Temperature -40 to 125 -40 to 125 -40 to 125 -40 to 125 -40 to 125 ºC
Operating Temperature -40 to 85 -40 to 85 -40 to 85 -40 to 85 -40 to 85 ºC
Max Reverse Voltage 25 25 25 25 25 V
Max Reverse Current 10 10 10 10 10 mA
Max Forward Current 0.1 0.1 0.1 0.1 0.1 mA

Custom Multi-Element Ǫuads are also available.

GPD qualifications

Our compliance, certificates, and capabilities.