Semiconductor Vcsel Differential Efficiency Calculator
Extract actual multi-point VCSEL optical slope and inverse differential quantum yield, photon energy eV numerically watts/amp; not forward laser slope efficiency model.
Description
Differential optical efficiency is extracted from a measured optical-power versus drive-current slope.
Differential optical efficiency is extracted from a measured optical-power versus drive-current slope.1
A matched photon energy converts watts per ampere into an apparent differential quantum efficiency.
When to use Semiconductor Vcsel Differential Efficiency Calculator
Use this tool when you need to reproduce the stated calculation from measured records or independently selected model inputs. Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
How to use Semiconductor Vcsel Differential Efficiency Calculator and understand its results
- Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
- Enter observedVcselDriveAmps, observedVcselOpticalWatts, callerMatchedPhotonEnergyEv, following the field table and rules below, then run the tool.
- Read extractedVcselDifferentialQuantumEfficiency, measuredVcselSlopeWattsAmp, fitRSquared. Use the output meanings below to interpret units, signs, flags, and any nested result fields.
- Correct reported input issues and run again. For a successful result, check the stated evidence coverage and assumptions before using it in your review.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| observedVcselDriveAmps | Observed VCSEL drive amps | list of number | Required |
| observedVcselOpticalWatts | Observed VCSEL optical watts | list of number | Required |
| callerMatchedPhotonEnergyEv | Caller matched photon energy ev | number | Required |
Use at least two aligned nonnegative current and power observations, distinct current coordinates, and positive photon energy in electronvolts. Fit power versus current by ordinary least squares; divide fitted watts-per-ampere slope by photon energy’s numerical eV value. Report log-free fit R². Signed slopes and efficiency above one are not clipped.
P=a+bI; differentialEfficiency=b/photonEnergyEv Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| extractedVcselDifferentialQuantumEfficiency | Extracted VCSEL differential quantum efficiency | number |
| measuredVcselSlopeWattsAmp | Measured VCSEL slope watts amp | number |
| fitRSquared | Fit R² | number |
{
"input": {
"observedVcselDriveAmps": [
1,
2,
3
],
"observedVcselOpticalWatts": [
1,
3,
5
],
"callerMatchedPhotonEnergyEv": 2
},
"output": {
"extractedVcselDifferentialQuantumEfficiency": 1,
"measuredVcselSlopeWattsAmp": 2,
"fitRSquared": 1
}
}Limitations and assumptions
Matched measurement branch, material state, calibration, and conventions must be independently established. Results do not certify device performance or operating conditions.
Missing required fields, unknown fields, wrong types, and violated calculation rules are input issues. Numeric values must be finite; nonfinite results are rejected. Evidence arrays must be dense, with no missing cells. Numeric observation lists allow at most 10,000 entries, subject to any smaller bounds stated above.
Alternative or Complementary methods
For a related review, use Semiconductor Vcsel Threshold Gain Calculator: A VCSEL threshold-gain budget combines internal loss and mirror loss and divides by confinement. The mirror inputs are intensity reflectivities, which fixes the logarithm’s convention. For a complementary step, use Semiconductor Silicon Photonics Phase Shifter Vpi Calculator: A phase-shifter Vπ is the voltage change associated with a π phase change on a chosen linear branch. Measured unwrapped phase data can estimate Vπ and its interaction-length product.
References
Similar or alternative tools
- Semiconductor Vcsel Threshold Gain Calculator
A VCSEL threshold-gain budget combines internal loss and mirror loss and divides by confinement. The mirror inputs are intensity reflectivities, which fixes the logarithm’s convention.
- Semiconductor Silicon Photonics Phase Shifter Vpi Calculator
A phase-shifter Vπ is the voltage change associated with a π phase change on a chosen linear branch. Measured unwrapped phase data can estimate Vπ and its interaction-length product.