---
title: "Autocorrelation Deconvolution calculator — AperiOptic"
description: "Convert AC FWHM to true pulse width for assumed pulse shape. Free online optics calculator, with the formula and code snippets."
url: "https://aperioptic.com/calculators/autocorrelation-deconvolution"
---

# Autocorrelation Deconvolution calculator

Convert AC FWHM to true pulse width for assumed pulse shape.

Category: [Laser & Ultrafast](https://aperioptic.com/calculators)

Formula: `τp = τAC / k (k = 1.414 Gaussian, 1.543 sech²)`

## Inputs

| Input | Parameter | Unit | Default |
| --- | --- | --- | --- |
| AC FWHM | `tac` | fs | 150 |
| 0=Gauss, 1=sech² | `shape` |  | 1 |

## Result with the default inputs

- Pulse FWHM: 97.2252 fs
- Deconv. factor: 1.5428

Open it with your own values: put each input in the address as a parameter, for example [`/calculators/autocorrelation-deconvolution?tac=150`](https://aperioptic.com/calculators/autocorrelation-deconvolution?tac=150). A unit other than the listed one goes in `<parameter>_unit`.

Read more: [Wikipedia: Optical autocorrelation](https://en.wikipedia.org/wiki/Optical_autocorrelation)

[All optics calculators](https://aperioptic.com/calculators)

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The interactive page: https://aperioptic.com/calculators/autocorrelation-deconvolution (AperiOptic runs in the browser; free, no account). Every page of the site as Markdown: https://aperioptic.com/llms.txt