Photodiodes as Single Photon Detectors

In this project, we use several photodiodes as Single Photon Avalanche Detectors (SPADs). We use a light bulb as the light source and grating to vary the wavelength of the light source. We will build a passive quenching configuration to get photons detected. Thus, by knowing which light source is working for the LEDs to detect photons, we can determine band gaps of each LEDs.

Setup (Tentative)

Equipment

Photodiodes Arduino Uno Resistors Breadboard Jump wires Light Bulb Grating