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Dark Current Noise Formula

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Dark Current Noise is the electrical noise or current that is generated by photosensitive devices, when they are exposed to no external light or when they operate in the absence of incident photons. Check FAQs

i d = 2 \cdot B \cdot [Charge-e] \cdot I d

i_d - Dark Current Noise?B - Post Detection Bandwidth?I_d - Dark Current?[Charge-e] - Charge of electron?

Dark Current Noise Example

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With units

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Here is how the Dark Current Noise equation looks like with Values.

Here is how the Dark Current Noise equation looks like with Units.

Here is how the Dark Current Noise equation looks like.

2.8E-20 = 2 \cdot 8E+6 \cdot 1.6E-19 \cdot 11

2.8E-20A = 2 \cdot 8E+6Hz \cdot 1.6E-19C \cdot 11nA

2.8E-20 = 2 \cdot 8E+6 \cdot 1.6E-19 \cdot 11

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Dark Current Noise Solution

Follow our step by step solution on how to calculate Dark Current Noise?

FIRST Step Consider the formula

i d = 2 \cdot B \cdot [Charge-e] \cdot I d

Next Step Substitute values of Variables

∴

i d = 2 \cdot 8E+6Hz \cdot [Charge-e] \cdot 11nA

Next Step Substitute values of Constants

∴

i d = 2 \cdot 8E+6Hz \cdot 1.6E-19C \cdot 11nA

Next Step Convert Units

∴

i d = 2 \cdot 8E+6Hz \cdot 1.6E-19C \cdot 1.1E-8A

Next Step Prepare to Evaluate

∴

i d = 2 \cdot 8E+6 \cdot 1.6E-19 \cdot 1.1E-8

Next Step Evaluate

∴

i d = 2.8198308512E-20A

LAST Step Rounding Answer

∴

i d = 2.8E-20A

Dark Current Noise Formula Elements

Variables

Constants

Dark Current Noise

Dark Current Noise is the electrical noise or current that is generated by photosensitive devices, when they are exposed to no external light or when they operate in the absence of incident photons.

Symbol: i_d

Measurement: Electric CurrentUnit: A

Note: Value should be greater than 0.

Formulas to find Dark Current Noise

Post Detection Bandwidth

Post Detection Bandwidth refers to the bandwidth of the electrical signal after it has been detected and converted from an optical signal.

Symbol: B

Measurement: FrequencyUnit: Hz

Note: Value should be greater than 0.

Formulas to find Post Detection Bandwidth

Dark Current

Dark current is the electric current that flows through a photosensitive device, such as a photodetector, even when there is no incident light or photons striking the device.

Symbol: I_d

Measurement: Electric CurrentUnit: nA

Note: Value should be greater than 0.

Formulas to find Dark Current

Charge of electron

Charge of electron is a fundamental physical constant, representing the electric charge carried by an electron, which is the elementary particle with a negative electric charge.

Symbol: [Charge-e]

Value: 1.60217662E-19 C

Other formulas in C V Actions of Optics Transmission category

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C j = ε r \cdot \frac{A j}{w}

Go Load Resistor

R L = \frac{1}{2 \cdot π \cdot B \cdot C}

Go Noise Equivalent Power

NEP = [hP] \cdot [c] \cdot \frac{\sqrt{2 \cdot e \cdot I d}}{η \cdot e \cdot λ}

Go Optical Gain of Phototransistor

G O = η \cdot h FE

How to Evaluate Dark Current Noise?

Dark Current Noise evaluator uses Dark Current Noise = 2*Post Detection Bandwidth*[Charge-e]*Dark Current to evaluate the Dark Current Noise, Dark current noise in optics refers to the electrical noise or current that is generated by photosensitive devices, such as photodiodes or charge-coupled devices (CCD), when they are exposed to no external light or when they operate in the absence of incident photons. Dark Current Noise is denoted by i_d symbol.

How to evaluate Dark Current Noise using this online evaluator? To use this online evaluator for Dark Current Noise, enter Post Detection Bandwidth (B) & Dark Current (I_d) and hit the calculate button.

FAQs on Dark Current Noise

What is the formula to find Dark Current Noise?

The formula of Dark Current Noise is expressed as Dark Current Noise = 2*Post Detection Bandwidth*[Charge-e]*Dark Current. Here is an example- 7.4E-26 = 2*8000000*[Charge-e]*1.1E-08.

How to calculate Dark Current Noise?

With Post Detection Bandwidth (B) & Dark Current (I_d) we can find Dark Current Noise using the formula - Dark Current Noise = 2*Post Detection Bandwidth*[Charge-e]*Dark Current. This formula also uses Charge of electron constant(s).

Can the Dark Current Noise be negative?

No, the Dark Current Noise, measured in Electric Current cannot be negative.

Which unit is used to measure Dark Current Noise?

Dark Current Noise is usually measured using the Ampere[A] for Electric Current. Milliampere[A], Microampere[A], Centiampere[A] are the few other units in which Dark Current Noise can be measured.

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Dark Current Noise Formula

Dark Current Noise Example

Dark Current Noise Solution

Dark Current Noise Formula Elements

Other formulas in C V Actions of Optics Transmission category

How to Evaluate Dark Current Noise?

FAQs on Dark Current Noise

Variable Name