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Detectivity of Photodetector Formula

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Detectivity quantifies the device's ability to detect weak optical signals while considering its noise characteristics. Check FAQs

D = \frac{1}{NEP}

D - Detectivity?NEP - Noise Equivalent Power?

Detectivity of Photodetector Example

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Here is how the Detectivity of Photodetector equation looks like with Values.

Here is how the Detectivity of Photodetector equation looks like with Units.

Here is how the Detectivity of Photodetector equation looks like.

0.125 = \frac{1}{8}

0.125 = \frac{1}{8W}

0.125 = \frac{1}{8}

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Detectivity of Photodetector Solution

Follow our step by step solution on how to calculate Detectivity of Photodetector?

FIRST Step Consider the formula

D = \frac{1}{NEP}

Next Step Substitute values of Variables

∴

D = \frac{1}{8W}

Next Step Prepare to Evaluate

∴

D = \frac{1}{8}

LAST Step Evaluate

∴

D = 0.125

Detectivity of Photodetector Formula Elements

Variables

Detectivity

Detectivity quantifies the device's ability to detect weak optical signals while considering its noise characteristics.

Symbol: D

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Detectivity

Noise Equivalent Power

Noise Equivalent Power measures the minimum detectable power or intensity of radiation, taking into account the inherent noise in the detector system.

Symbol: NEP

Measurement: PowerUnit: W

Note: Value should be greater than 0.

Formulas to find Noise Equivalent Power

Other formulas in Optical Detectors category

Go Quantum Efficiency of Photodetector

η = \frac{N e}{N p}

Go Incident Photon Rate

R i = \frac{P i}{[hP] \cdot F i}

Go Electron Rate in Detector

R p = η \cdot R i

Go Long Wavelength Cutoff Point

λ c = [hP] \cdot \frac{[c]}{E g}

How to Evaluate Detectivity of Photodetector?

Detectivity of Photodetector evaluator uses Detectivity = 1/Noise Equivalent Power to evaluate the Detectivity, Detectivity of photodetector is a figure of merit used to evaluate its ability to detect weak optical signals while considering both its sensitivity and the noise characteristics. Detectivity is denoted by D symbol.

How to evaluate Detectivity of Photodetector using this online evaluator? To use this online evaluator for Detectivity of Photodetector, enter Noise Equivalent Power (NEP) and hit the calculate button.

FAQs on Detectivity of Photodetector

What is the formula to find Detectivity of Photodetector?

The formula of Detectivity of Photodetector is expressed as Detectivity = 1/Noise Equivalent Power. Here is an example- 0.125 = 1/8.

How to calculate Detectivity of Photodetector?

With Noise Equivalent Power (NEP) we can find Detectivity of Photodetector using the formula - Detectivity = 1/Noise Equivalent Power.

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