# Photon Detection Efficiency Calculator(SiPM)

The Photon Detection Efficiency Calculator (SiPM) is a useful tool for calculating photon detection efficiency (PDE). This simple calculator accepts gain, afterpulsing probability, crosstalk probability, wavelength, and resilience as inputs and produces PDE in a matter of seconds.

### What is Photon Detection Efficiency (PDE) and How to Calculate it?

In the sections below, you'll find a detailed step-by-step process for calculating SiPM's photon detection efficiency. To achieve the desired effect, obtain the steps and carefully follow them.

- Step 1: Note the SiPM gain, crosstalk probability, afterpulsing probability, wavelength, and responsiveness.
- Step 2: Get the PDE formula and fill in the blanks with the given values.
- Step 3: Check the output by doing the relevant math procedures.

### Photon Detection Efficiency Formula

The photon detection efficiency of SiPMs is measured and evaluates their sensitivity. The following is the PDE formula

**PDE = (R x h x c)/[e x λ x G(1 + P_XT) (1 + P_AP)]**

- Where,
- PDE = photon detection efficiency
- h = planck's constant (6.626 x 10-34 m²kg/s)
- c = speed of light (2.998 x 108 m/s)
- e = elementary charge (1.602 x 10-19 C)
- R = responsivity
- λ = wavelength of the incident light
- The gain, or amount of charge created for each detected photon, is called G.
- P_XT = crosstalk probability
- P_AP = afterpulsing probability.

The sensor's responsiveness can also be calculated using this PDE calculation.

### How to Use the Photon Detection Efficiency Calculator?

The following is the procedure how to use the Photon Detection Efficiency calculator

- Step 1: Input the unknown values like gain, afterpulsing probability, crosstalk probability, wavelength, and responsivity and x in the appropriate input fields.
- Step 2: To acquire the result, click the "Calculate the Unknown" button.
- Step 3: Finally, the output field will show the Photon Detection Efficiency value.

For more concepts check out physicscalculatorpro.com to get quick answers by using this free tool.

### FAQs on Photon Detection Efficiency

**1. What is the definition of photon detection efficiency?**

The ratio of the number of photons released by microcells to the number of incident photons is called the photon detection efficiency.

**2. What does SIPM stand for?**

Silicon Photomultiplier (SIPM) is an acronym for Silicon Photomultiplier. It's a solid-state photodetector that generates a current pulse of 10^5 to 10^6 electrons in response to photon absorption.

**3. What is the process of converting a photon to an electron?**

The "photovoltaic" effect transforms photons into electrons in photovoltaics (photo meaning light, and voltaic meaning electricity). The photovoltaic effect occurs when photons from the sun strike the surface of a silicon semiconductor material, causing free electrons to be liberated from the atoms.

**4. How can photons dislodge electrons?**

When a photon collides with an electron, some of its energy is used to remove the electron. The photon's remaining energy is transferred to a free negative charge known as a photoelectron.

**5. When a photon collides with a solar cell, what happens?**

When photons of light strike our solar cell, their energy separates electron-hole pairs. Each photon with sufficient energy will generally liberate exactly one electron, as well as a free hole.