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.

Line

Documented CO2 line or band-center key.

Look up common regular-isotope CO2 laser line wavelengths with band and isotopologue labels. 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]

Wavelength (µm)

Wavelength of the line (band centers approximate).

Band

Vibrational band and branch assignment.

Isotopologue

Isotopologue of the transition.

Note

Selection guidance for the entry.

• 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.

• Excimer and F2 Gas Mixture Table

  Look up an excimer or molecular-fluorine laser wavelength and photon energy, with a reminder that gas-fill life depends on the complete laser system.

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  Return the mid-infrared QCL emission window that targets the strongest ro-vibrational fingerprint of a common gas.

• III–V Alloy Band-Edge Wavelength Proxy

  Estimate a bulk-alloy band gap and corresponding band-edge wavelength for common III–V compositions. This material-composition proxy omits quantum confinement, well thickness, strain-induced band shifts, and operating-temperature corrections required for a quantum-well transition design.