TEC Stability
Measure TEC temperature stability against a caller-supplied millikelvin limit.
Description
TEC stability summarizes a temperature record by mean, peak-to-peak span and population RMS variation.
TEC stability summarizes a temperature record by mean, peak-to-peak span and population RMS variation. Acceptance uses peak-to-peak span rather than RMS.1
Measure TEC temperature stability against a caller-supplied millikelvin limit.
When to use TEC Stability
Use this tool to measure TEC temperature stability against a caller-supplied millikelvin limit.
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 TEC Stability 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 temperatureSamplesCelsius, stabilityLimitMilliKelvin using the field table and calculation rules, then run the tool.
- Read meanTemperatureCelsius, peakToPeakMilliKelvin, rmsVariationMilliKelvin, withinStabilityLimit. 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 |
|---|---|---|---|
| temperatureSamplesCelsius | Temperature samples (°C) | list of number | Required |
| stabilityLimitMilliKelvin | Caller stability limit (mK) | number; minimum: 0 | Required |
Enter nonempty finite Celsius samples and nonnegative mK limit. Return mean, both variations and inclusive span≤limit flag. A single sample has zero variation.
span_mK=1000(max−min); RMS_mK=1000 sqrt(Σ(T−mean)²/n) Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| meanTemperatureCelsius | Mean temperature (°C) | number |
| peakToPeakMilliKelvin | Peak-to-peak variation (mK) | number; minimum: 0 |
| rmsVariationMilliKelvin | RMS variation (mK) | number; minimum: 0 |
| withinStabilityLimit | Within stability limit | boolean |
{
"input": {
"temperatureSamplesCelsius": [
20,
20.001
],
"stabilityLimitMilliKelvin": 2
},
"output": {
"meanTemperatureCelsius": 20.000500000000002,
"peakToPeakMilliKelvin": 1.0000000000012221,
"rmsVariationMilliKelvin": 0.5000000000006111,
"withinStabilityLimit": true
}
}Limitations and assumptions
No sampling-time requirement, controller tuning or long-term drift model is supplied.
Numeric inputs must be finite. Follow the calculation-specific rules for overflow, underflow and exceptional cases. Lists are limited to 100,000 entries; the rules above may require smaller limits. Missing required fields, extra fields, wrong value types and violations of the calculation rules are input errors. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use THz Cooling Margin: Compare a THz laser operating temperature with a supplied cooling limit. For a complementary task, use Thermal-Lens Coefficient: Calculate measured thermal-lens dioptric-power change per watt of pump-power change.
References
-
TEC Stability — tool.io
Similar or alternative tools
- THz Cooling Margin
Compare a THz laser operating temperature with a supplied cooling limit.
- Thermal-Lens Coefficient
Calculate measured thermal-lens dioptric-power change per watt of pump-power change.