Beam-Tap Ratio
Calculate calibrated beam-monitor tap ratio and measured sample share.
Description
A beam-monitor tap ratio compares sample power with a reference and applies a supplied calibration factor.
A beam-monitor tap ratio compares sample power with a reference and applies a supplied calibration factor. The sample-share percentage uses the uncalibrated sum instead.1
Calculate calibrated beam-monitor tap ratio and measured sample share.
When to use Beam-Tap Ratio
Use this tool to calculate calibrated beam-monitor tap ratio and measured sample share.
Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
How to use Beam-Tap Ratio and understand its results
- Prepare the optical measurements, geometry, fitted coefficients or caller-selected thresholds requested. Confirm wavelength, radius/diameter, pulse-width, angle and unit conventions before running the calculation.
- Enter samplePowerWatts, referencePowerWatts, calibrationFactor using the field table and calculation rules, then run the tool.
- Read calibratedTapRatio, sampleSharePercent. The explanation below defines the units, signs, ordering and any flags or placeholder values.
- If the tool reports an input issue, correct the values and run it again. Apply the stated assumptions when interpreting a successfully returned result.
| Input field | Meaning | Value type; see rules below | Requirement |
|---|---|---|---|
| samplePowerWatts | Sample tap power (W) | number; minimum: 0 | Required |
| referencePowerWatts | Reference power (W) | number; minimum: 0 | Required |
| calibrationFactor | Tap calibration factor | number; minimum: 0 | Required |
Enter nonnegative sample/factor and positive reference watts. Return ratio and share.
calibratedRatio=sample/reference×factor; share%=100sample/(sample+reference) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| calibratedTapRatio | Calibrated sample/reference ratio | number; minimum: 0 |
| sampleSharePercent | Sample share of measured total (%) | number; minimum: 0; maximum: 100 |
{
"input": {
"samplePowerWatts": 2,
"referencePowerWatts": 8,
"calibrationFactor": 1
},
"output": {
"calibratedTapRatio": 0.25,
"sampleSharePercent": 20
}
}Limitations and assumptions
No detector linearity, calibration fitting or optical splitter model is supplied.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors.
Alternative or Complementary methods
Use Brightness Conservation: Measure brightness retention through a tapered double-clad section against a caller limit. For a complementary task, use Cantilever Photoacoustic Gain: Compare cantilever and baseline photoacoustic signal and SNR.
References
-
Beam-Tap Ratio — tool.io
Similar or alternative tools
- Brightness Conservation
Measure brightness retention through a tapered double-clad section against a caller limit.
- Cantilever Photoacoustic Gain
Compare cantilever and baseline photoacoustic signal and SNR.