Single Photon Detectors
Princeton Lightwave designs and manufactures the highest performance Single Photon Avalanche Diodes (SPADs) available for single photon detection in the short-wave infrared (SWIR) wavelength range from 0.9 to 1.6 µm. PLI’s SPADs have been optimized for Geiger-mode operation, which provides a macroscopic avalanche current pulse in response to just a single photon. When combined with appropriate bias and pulse discrimination circuitry, the SPADs provide high photon detection efficiency, very low dark count rates, and high photon counting repetition rates. These detectors are available in a variety of product formats, including modules providing free-space coupling, fiber-coupling, integrated thermoelectric cooling (TEC), and turnkey receiver instruments.
The Princeton Lightwave SPAD is an InGaAs/InP avalanche photodetector designed specifically for single photon counting applications. The device is intended for use at voltage biases above the Break down voltage (in the so-called “Geiger mode”) so that a single photon incident on the detector will give rise to a macroscopic current pulse.
1550nm Gm APDs
Combined with appropriate pulse detection circuitry, this device allows for the detection of single photons in the wavelength range from 0.95 to 1.6 µm.
- PGA-200 Cooled Single Photon Counting Avalanche Photodiode - Discrete
- PGA-246-25 Single Photon Avalanche Diode (SPAD)
- PGA-300 Pigtailed Coaxial Single Photon Avalanche Diode (SPAD)
- PGA-308 Cooled Single Photon Counting Avalanche Photodiode – Fiber Pigtailed
- PGA-400 Pigtailed 14 Pin Butterfly Single Photon Avalanche Diode (SPAD)
1064nm Gm APDs
Combined with appropriate pulse detection circuitry, this device allows for the detection of single photons in the wavelength range from 0.95 to 1.1 µm.
- PGA-284 1064nm Single Photon Avalanche Diode (SPAD)
- PGA-384 1064nm Pigtailed Coaxial Single Photon Avalanche Diode (SPAD)
Negative Feedback APDs
Princeton Lightwave’s PNA-20X series NFAD is a new type of photon-counting device consisting of InGaAs/InP avalanche diodes with monolithically integrated negative feedback. PLI’s patented approach to the integration of negative feedback resistors provides stable high-performance single photon response in Geiger mode operation. Leveraging the best-inclass performance of PLI’s single photon avalanche diode (SPAD) technology, PLI’s NFAD has excellent photon-counting capability in the shortwave infrared (SWIR) band, with high internal gain (105 to 106) and very consistent pulse response distributions. These detectors also have fast response coupled with excellent time resolution. Devices with single discrete active regions provide low dark count rate, and devices based on multiple connected active regions provide large detection area and photon number resolution.
Products in this category:
Single Photon Receiver
Princeton Lightwave’s line of Single Photon Benchtop Receivers offer complete solutions for single photon counting applications in the 920 to 1600nm range. The receiver integrates an InGaAs/InP Single Photon Avalanche diode (SPAD) with all the necessary bias and control electronics. The InGaAs/InP SPAD has been designed specifically for single photon counting to provide high detection efficiency and low dark count rate. The unit’s electronics utilize a patented technique to improve system performance. The front panel of the unit offers full control of settings and operation. It displays the number of photons detected in a selected interval as well as diagnostic information. The receiver can also be controlled with simple commands using a PC.
Products in this category:
- PGA-600 Single Photon Benchtop Receiver
- PGA-600HSU High Speed Single Photon Benchtop Receiver
- PGA-600HSX 100 MHz Single Photon Benchtop Receiver