Use this laser calculation or lookup for a first-pass optics, pulse, beam, gain-medium, diode, fiber, or safety comparison under explicitly stated wavelength and operating conditions.

Needed GDD (fs²)

Group-delay dispersion to compensate in fs² (negative for anomalous). Magnitude drives the choice.

Mirror capacity (fs²)

Maximum GDD magnitude the candidate chirped-mirror design can supply.

Prism capacity (fs²)

Maximum GDD magnitude the candidate prism-pair design can supply.

Compare required group-delay dispersion with user-supplied chirped-mirror and prism-pair capacities to select a compressor family without assuming universal thresholds. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Method

First compressor family whose supplied capacity fits.

Rationale

Why the method fits the magnitude.

• Laser behavior depends on wavelength, mode, coherence, pulse shape, beam quality, cavity and optical losses, material data, temperature, alignment, nonlinear effects, damage thresholds, and measurement definitions. Lookup values are not substitutes for current device data or laser-safety analysis.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Verify constants and limits with primary literature and manufacturer data, propagate tolerances, model the complete optical train, and apply the relevant laser safety standard.

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  Compute the chirped-pulse amplification stretch factor from stretched and compressed pulse durations.

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  Compare continuous-wave and mode-locked Ti:sapphire mode overlap with a Gaussian pump as a soft-aperture screening check, without claiming full cavity stability.