The Licel Si-Avalanche Photodiode Module consists of the detector head and the power supply unit. The APD module combines a Si/InGaAs-Avalanche Photodiode, TE cooler, temperature controller, preamplifier and XYZ positioner in a single compact module. APD and preamplifier are carefully shielded against RF and noise through the power lines. An external HV supply is included.

Air Cooled Si APD Module

Please download a printable version.
APD User Manual Digital Control.

Detector module based on Excelitas enhanced Si-Avalanche Photodiodes

features:

  • 0.8, 1.0 or 3mm detector diameter
  • >80% QE @650 nm
  • up to 36 A/W responsivity @ 1060 nm
  • low noise - high gain preamplifier
  • integrated HV supply
  • integrated TE cooler and temperature controller,
  • Temp. stability better 0.5 K
  • integrated power supply
  • thread for 2 inch Thorlabs lens tubes
Image of the APD together with HV supply

applications:

  • high sensitivity, high speed measurements @ 500 - 1100 nm
  • high dynamic range detection of near infrared signals
  • (Nd:YAG fundamental 1064nm)
  • lidar
  • fluorescence detection
  • particle counters

mounting:

Remote Control:

The APD can be remote controlled via Ethernet ( Remote control data sheet). See the Ethernet Connectivity page for a list of available options.

Isolated digital interface

Starting from 2023 we ship for APD modules, which are integrated into detection systems and remote controllable with a isolated digital remote control to break ground loops.

They have a 6 pin Lemo connector

Analog interface

We stopped shipping this interface in 2023 as the benefits of the digital interface outweigh the ease of the electrical simple interface. See the migration path if you see ground loop problems
APD User Manual
The analog remote control input is a good choice when the remote control is done by user hardware.

The cassette has 4 pin M8 sensor connector

Air Cooled InGaAs APD Module

The Licel InGaAs APD detector has an air cooled TEC package. The 500 µm square detector can be cooled down to -15°C and is packaged using the same form factor as our Si- APD module.

InGaAs Datasheet

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