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# Bandwidth Limited Pulse Calculator

Computes the bandwidth limited duration of an optical pulse from its spectrum 🛈 $$a(t) = \left | a(t) \right | e^{i \phi(t)} \xrightarrow{\mathfrak{F}} A(\omega) = \left | A(\omega) \right | e^{i \psi(\omega)}$$ Under bandwidth limited conditions; \begin{align} \psi(\omega) &= 0 \\ \Rightarrow a(t) &= \mathfrak{F}^{-1} \left [ \sqrt{\left | A(\omega) \right |^2} \right ] \end{align}

Pure client-side JavaScript. Source code openly available on GitHub

Spectrum 🛈 Supported file formats:
• Comma separated values ($$\lambda_1, |A_1|^2$$\n$$\lambda_2, |A_2|^2$$\n...) [*.csv]
• AvaSoft 8 Absolute Irradiance [*.irr8]
Window limits [PHz]
Fit function
Numerical Fit 🛈 🛈 Full width at half maximum of the numerical data Full width at half maximum of the fit to the numerical data 0.441 0.315