Semiconductor Si Photonics Two Photon Absorption Coefficient Calculator
Invert actual dI/dz=−βI² single-channel Si guide observations, signed apparent gain retained; caller has removed linear losses, not prescribed optical intensity.
Description
A single-channel two-photon absorption model relates the reciprocal intensity change to guide length.
A single-channel two-photon absorption model relates the reciprocal intensity change to guide length.1
Inverting measured observations gives a signed apparent coefficient after other losses have been independently removed.
When to use Semiconductor Si Photonics Two Photon Absorption Coefficient 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 Si Photonics Two Photon Absorption Coefficient Calculator and understand its results
- Prepare measured device or specimen records under independently matched branch, temperature, frame, and unit conventions.
- Enter observedInputIntensityWattsM2, observedOutputIntensityWattsM2, observedSiGuideLengthsM, following the field table and rules below, then run the tool.
- Read inferredTwoPhotonAbsorptionMeterWatts. 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 |
|---|---|---|---|
| observedInputIntensityWattsM2 | Observed input intensity watts m2 | list of number | Required |
| observedOutputIntensityWattsM2 | Observed output intensity watts m2 | list of number | Required |
| observedSiGuideLengthsM | Observed si guide lengths m | list of number | Required |
Use aligned nonempty positive input/output intensities in watts per square metre and positive guide lengths in metres. Subtract reciprocal input from reciprocal output and divide by length. Output larger than input produces a negative coefficient rather than being clipped.
β_i=(1/Iout_i−1/Iin_i)/L_i Symbols follow the input and output meanings and the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| inferredTwoPhotonAbsorptionMeterWatts | Inferred two photon absorption meter watts | list of number |
{
"input": {
"observedInputIntensityWattsM2": [
2,
4
],
"observedOutputIntensityWattsM2": [
1,
2
],
"observedSiGuideLengthsM": [
1,
2
]
},
"output": {
"inferredTwoPhotonAbsorptionMeterWatts": [
0.5,
0.125
]
}
}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 Quantum Well Absorption Coefficient Calculator: A single-pass absorption estimate needs the transmitted fraction after accounting for entry reflection. That optical branch must be established before taking a logarithm. For a complementary step, use Semiconductor Plasmonic Propagation Length Calculator: An intensity decay fit defines a plasmonic propagation length at the 1/e intensity level. Using intensity rather than field amplitude fixes the factor-of-two convention.
References
Similar or alternative tools
- Semiconductor Quantum Well Absorption Coefficient Calculator
A single-pass absorption estimate needs the transmitted fraction after accounting for entry reflection. That optical branch must be established before taking a logarithm.
- Semiconductor Plasmonic Propagation Length Calculator
An intensity decay fit defines a plasmonic propagation length at the 1/e intensity level. Using intensity rather than field amplitude fixes the factor-of-two convention.