Semiconductor Laser Frequency Chirp Calculator
Actual calibrated laser instantaneous-frequency offsets and sampled range, not derive phase, frequency chirp from intensity alone or unsampled peak excursion.
Description
Frequency chirp describes a time-varying frequency relative to an adopted reference.
Frequency chirp describes a time-varying frequency relative to an adopted reference.1
Sampled offsets and peak-to-peak span retain the measured trace without deriving a phase or linewidth.
When to use Semiconductor Laser Frequency Chirp Calculator
Use this tool to obtain signedObservedChirpOffsetsHz, observedPeakToPeakFrequencyChirpHz from the supplied records using the stated calculation. Establish the device or material, operating point, units and independently applicable measurement or model calibration.
How to use Semiconductor Laser Frequency Chirp Calculator and understand its results
- Establish the device or material, operating point, units and independently applicable measurement or model calibration.
- Enter actualIndependentlyMeasuredInstantaneousFrequenciesHz, matchedReferenceFrequencyHz, using the field meanings and rules below, then run the tool.
- Read result.signedObservedChirpOffsetsHz, result.observedPeakToPeakFrequencyChirpHz. Use the units and sign conventions below, and review any unknown records separately.
- Correct any reported input issue and run again. Before using a successful result, check the stated units, signs, reference scope and observation coverage.
| Input field | Meaning | Value type | Requirement |
|---|---|---|---|
| actualIndependentlyMeasuredInstantaneousFrequenciesHz | Actual independently measured instantaneous frequencies hz | list of number | Required |
| matchedReferenceFrequencyHz | Matched reference frequency hz | number | Required |
Require a nonempty finite instantaneous-frequency sample list and finite reference frequency in hertz. Frequencies have no additional positivity guard. Return each sample-minus-reference offset and maximum-minus-minimum sample span. No time samples, spectrum or phase integration are required.
offset_i=frequency_i−referenceFrequency; peakToPeakHz=max(frequencies)−min(frequencies) Use the matching field units and the exact boundary, ordering and reference rules above.
| Output field | Meaning | Value type |
|---|---|---|
| result | Qualified observed calculation or explicit reference | object |
| result.signedObservedChirpOffsetsHz | Each instantaneous-frequency sample minus matched reference frequency. | list |
| result.observedPeakToPeakFrequencyChirpHz | Maximum minus minimum of supplied frequency samples. | number |
{
"input": {
"actualIndependentlyMeasuredInstantaneousFrequenciesHz": [
100,
110,
90
],
"matchedReferenceFrequencyHz": 100
},
"output": {
"result": {
"signedObservedChirpOffsetsHz": [
0,
10,
-10
],
"observedPeakToPeakFrequencyChirpHz": 20
}
}
}Limitations and assumptions
Device structure, material state, operating conditions and calibration determine applicability. The result does not infer missing physical parameters, verify a transport mechanism or validate a fabricated device model.
Missing required fields, unknown fields, wrong types and violated rules return input issues. Numeric values and outputs must be finite. Lists and matrices must be dense, without missing cells. Numeric lists allow at most 10000 entries, subject to the narrower lengths and code rules above. Extremely large composite outputs are rejected.
Alternative or Complementary methods
For a related step, use Semiconductor Laser Wavelength Drift Vs Temperature Calculator: Laser wavelength drift depends on device operating conditions and temperature. For a complementary comparison, use Semiconductor Laser Linewidth Schawlow Townes Calculator: A Schawlow–Townes linewidth reference depends on the laser model and correction conventions.
References
Similar or alternative tools
- Semiconductor Laser Wavelength Drift Vs Temperature Calculator
Laser wavelength drift depends on device operating conditions and temperature.
- Semiconductor Laser Linewidth Schawlow Townes Calculator
A Schawlow–Townes linewidth reference depends on the laser model and correction conventions.