Average Number of Photons Detected Formula

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Average number of photons detected refers to the expected or mean number of photons that are registered or measured by a photon detector over a certain period of time or within a specific experiment. Check FAQs
zm=ηPouτf[hP]
zm - Average Number Of Photons Detected?η - Quantum Efficiency?Pou - Average Received Optical Power?τ - Time Period?f - Frequency Of Incident Light?[hP] - Planck constant?

Average Number of Photons Detected Example

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Here is how the Average Number of Photons Detected equation looks like with Values.

Here is how the Average Number of Photons Detected equation looks like with Units.

Here is how the Average Number of Photons Detected equation looks like.

20.6152Edit=0.3Edit6.5E-11Edit14.01Edit20Edit6.6E-34
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Average Number of Photons Detected Solution

Follow our step by step solution on how to calculate Average Number of Photons Detected?

FIRST Step Consider the formula
zm=ηPouτf[hP]
Next Step Substitute values of Variables
zm=0.36.5E-11pW14.01ns20Hz[hP]
Next Step Substitute values of Constants
zm=0.36.5E-11pW14.01ns20Hz6.6E-34
Next Step Convert Units
zm=0.36.5E-23W1.4E-8s20Hz6.6E-34
Next Step Prepare to Evaluate
zm=0.36.5E-231.4E-8206.6E-34
Next Step Evaluate
zm=20.6151608986011
LAST Step Rounding Answer
zm=20.6152

Average Number of Photons Detected Formula Elements

Variables
Constants
Average Number Of Photons Detected
Average number of photons detected refers to the expected or mean number of photons that are registered or measured by a photon detector over a certain period of time or within a specific experiment.
Symbol: zm
Measurement: NAUnit: Unitless
Note: Value should be greater than 0.
Quantum Efficiency
Quantum Efficiency represents the probability that a photon incident on the photodetector will generate an electron-hole pair, leading to a photocurrent.
Symbol: η
Measurement: NAUnit: Unitless
Note: Value should be between 0 to 1.
Average Received Optical Power
Average Received Optical Power is a measurement of the average optical power level received by a photodetector or optical receiver in a communication system or any optical application.
Symbol: Pou
Measurement: PowerUnit: pW
Note: Value should be greater than 0.
Time Period
Time period generally refers to the duration or interval of time between two specific events or points in time w.r.t BER of 10-9.
Symbol: τ
Measurement: TimeUnit: ns
Note: Value should be greater than 0.
Frequency Of Incident Light
Frequency of incident light is a measure of how many cycles (oscillations) of the electromagnetic wave occur per second.
Symbol: f
Measurement: FrequencyUnit: Hz
Note: Value should be greater than 0.
Planck constant
Planck constant is a fundamental universal constant that defines the quantum nature of energy and relates the energy of a photon to its frequency.
Symbol: [hP]
Value: 6.626070040E-34

Other formulas in Optical Detectors category

​Go Quantum Efficiency of Photodetector
η=NeNp
​Go Incident Photon Rate
Ri=Pi[hP]Fi
​Go Electron Rate in Detector
Rp=ηRi
​Go Long Wavelength Cutoff Point
λc=[hP][c]Eg

How to Evaluate Average Number of Photons Detected?

Average Number of Photons Detected evaluator uses Average Number Of Photons Detected = (Quantum Efficiency*Average Received Optical Power*Time Period)/(Frequency Of Incident Light*[hP]) to evaluate the Average Number Of Photons Detected, Average number of photons detected, in the context of physics and photonics, refers to the expected or mean number of photons that are registered or measured by a photon detector over a certain period of time or within a specific experiment. It is a statistical measure that quantifies the typical outcome when detecting photons. Average Number Of Photons Detected is denoted by zm symbol.

How to evaluate Average Number of Photons Detected using this online evaluator? To use this online evaluator for Average Number of Photons Detected, enter Quantum Efficiency (η), Average Received Optical Power (Pou), Time Period (τ) & Frequency Of Incident Light (f) and hit the calculate button.

FAQs on Average Number of Photons Detected

What is the formula to find Average Number of Photons Detected?
The formula of Average Number of Photons Detected is expressed as Average Number Of Photons Detected = (Quantum Efficiency*Average Received Optical Power*Time Period)/(Frequency Of Incident Light*[hP]). Here is an example- 20.60045 = (0.3*6.5E-23*1.401E-08)/(20*[hP]).
How to calculate Average Number of Photons Detected?
With Quantum Efficiency (η), Average Received Optical Power (Pou), Time Period (τ) & Frequency Of Incident Light (f) we can find Average Number of Photons Detected using the formula - Average Number Of Photons Detected = (Quantum Efficiency*Average Received Optical Power*Time Period)/(Frequency Of Incident Light*[hP]). This formula also uses Planck constant .
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