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.

Target gas

Target molecule to monitor.

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

Centre wavelength (µm)

Centre of the recommended emission window.

Window low (µm)

Lower edge of the useful window.

Window high (µm)

Upper edge of the useful window.

Note

Selection remark for the gas.

• 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.

• CO2 Line Selection Table

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

• 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.

• Attosecond Streaking Window

  Compare an XUV burst duration with the IR half-cycle λ/(2c) while keeping this timing screen separate from streaking phase-retrieval feasibility.