Rare-Gas Pump Threshold
Compare absorbed pump power with a supplied rare-gas laser threshold.
Description
A pump-threshold screen compares absorbed pump power with a supplied lasing threshold.
A pump-threshold screen compares absorbed pump power with a supplied lasing threshold. Equality is included in the positive flag.1
Compare absorbed pump power with a supplied rare-gas laser threshold.
When to use Rare-Gas Pump Threshold
Use this tool to compare absorbed pump power with a supplied rare-gas laser threshold.
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 Rare-Gas Pump Threshold 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 absorbedPumpPowerWatts, thresholdPumpPowerWatts using the field table and calculation rules, then run the tool.
- Read pumpRatio, powerMarginWatts, aboveThreshold. 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 |
|---|---|---|---|
| absorbedPumpPowerWatts | Absorbed pump power (W) | number; minimum: 0 | Required |
| thresholdPumpPowerWatts | Threshold pump power (W) | number; minimum: 0 | Required |
Enter nonnegative absorbed power and positive threshold watts. Return ratio, signed margin and aboveThreshold for absorbed≥threshold.
ratio=absorbed/threshold; margin=absorbed−threshold Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| pumpRatio | Pump-to-threshold ratio | number; minimum: 0 |
| powerMarginWatts | Pump margin (W) | number |
| aboveThreshold | Above threshold | boolean |
{
"input": {
"absorbedPumpPowerWatts": 12,
"thresholdPumpPowerWatts": 10
},
"output": {
"pumpRatio": 1.2,
"powerMarginWatts": 2,
"aboveThreshold": true
}
}Limitations and assumptions
Threshold is not derived from rare-gas composition or cavity losses. The flag does not verify lasing.
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. A successfully returned false flag is an evaluated outcome; its meaning is explained above.
Alternative or Complementary methods
Use Random-Fiber Laser Threshold: Compare distributed random-fiber gain with supplied round-trip logarithmic loss. For a complementary task, use SASE Gain Length: Infer SASE exponential gain length from measured power growth.
References
-
Rare-Gas Pump Threshold — tool.io
Similar or alternative tools
- Random-Fiber Laser Threshold
Compare distributed random-fiber gain with supplied round-trip logarithmic loss.
- SASE Gain Length
Infer SASE exponential gain length from measured power growth.