Gaussian Pulse Time Bandwidth Calculator
Calculate a transform-limited Gaussian intensity bandwidth from pulse duration and a narrowband wavelength equivalent.
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Result
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Calculation steps
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How to calculate
Use intensity full width at half maximum in both time and frequency and distinguish frequency bandwidth from wavelength approximation.
Δt Δν=2ln2/π; narrowband Δλ≈λ0² Δν/c
Worked example
100 fs Gaussian transform-limited pulses require about4.412712 THz intensity bandwidth.
Assumptions and input details
Transform-limited Gaussian envelope, no chirp. Wavelength approximation is reported only for Δν/center frequency≤0.1. No pulse retrieval, spectral shape measurement, material dispersion or laser specification.
References: RP Photonics: Gaussian pulse definition
Unit definitions
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NIST measurement tables · Japanese traditional units · Mainland China and Hong Kong unit distinctions
Using this calculator
Can I enter my own problem?
Yes. Replace the example values with your own inputs. The result, calculation steps, tables and applicable diagrams update from those inputs. Blank or invalid values clear the result; example values are never silently substituted for missing inputs.
Are the results exact?
Results use floating-point arithmetic and displayed rounding. Read the formula, assumptions and any stated data precision before interpreting the result.
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