Saturable-Absorber Spot Match
Compare the beam radius on a saturable absorber with a supplied target radius and tolerance.
Description
Absorber spot matching compares a beam radius with a target mode radius.
Absorber spot matching compares a beam radius with a target mode radius. Absolute relative mismatch treats undersizing and oversizing symmetrically.1
Compare the beam radius on a saturable absorber with a supplied target radius and tolerance.
When to use Saturable-Absorber Spot Match
Use this tool to compare the beam radius on a saturable absorber with a supplied target radius and tolerance.
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 Saturable-Absorber Spot Match 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 beamRadiusMillimeters, absorberModeRadiusMillimeters, maximumMismatchPercent using the field table and calculation rules, then run the tool.
- Read radiusRatio, mismatchPercent, withinTolerance. 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 |
|---|---|---|---|
| beamRadiusMillimeters | Beam radius on absorber (mm) | number; minimum: 0 | Required |
| absorberModeRadiusMillimeters | Absorber target radius (mm) | number; minimum: 0 | Required |
| maximumMismatchPercent | Maximum radius mismatch (%) | number; minimum: 0 | Required |
Enter nonnegative beam radius, positive target radius and nonnegative tolerance in percent. Return ratio, mismatch and inclusive tolerance flag.
ratio=beam/target; mismatch%=100|ratio−1| Units, indexing, boundary conditions and exceptional cases are defined in the calculation rules above.
| Output field | Meaning | Value type |
|---|---|---|
| radiusRatio | Beam-to-target radius ratio | number; minimum: 0 |
| mismatchPercent | Absolute radius mismatch (%) | number; minimum: 0 |
| withinTolerance | Within tolerance | boolean |
{
"input": {
"beamRadiusMillimeters": 1,
"absorberModeRadiusMillimeters": 2,
"maximumMismatchPercent": 50
},
"output": {
"radiusRatio": 0.5,
"mismatchPercent": 50,
"withinTolerance": true
}
}Limitations and assumptions
No absorber saturation, damage, pulse dynamics or alignment tolerance is inferred.
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 Q-Switch Peak Power: Calculate triangular-pulse peak power and pulse-train average power. For a complementary task, use Focused-Beam Waist Location: Propagate a Gaussian beam q parameter through a thin lens to locate the new waist.
References
-
Saturable-Absorber Spot Match — tool.io
Similar or alternative tools
- Q-Switch Peak Power
Calculate triangular-pulse peak power and pulse-train average power.
- Focused-Beam Waist Location
Propagate a Gaussian beam q parameter through a thin lens to locate the new waist.