TS EN ISO 15367-1

TS EN ISO 15367-1 is the terminology-and-foundations part of the test methods used to determine the shape of a laser beam wavefront. It provides the conceptual basis for interpreting the spatial phase distribution of a beam across a plane approximately perpendicular to the propagation direction, and for expressing the resulting wavefront parameters together with their uncertainty in a test report.

What wavefront measurement means in practice

In laser technology, the wavefront describes the phase structure of the beam. When the wavefront departs from an ideal plane, those deviations can affect beam quality, focusability, and interaction with optical components. Measuring wavefront topography usually means determining the phase distribution over a plane nearly normal to the beam axis, then converting that information into a quantitative phase map. This standard focuses on the terminology and basic principles used to describe those deformations and to derive parameters from phase-distribution measurements.

Where this part applies

The standard is applicable to a broad range of beam types from both continuous-wave and pulsed lasers. In practical terms, that makes it useful as a common language for comparing wavefront data across different laser systems rather than tying the subject to one source type or one specific instrument design. Its emphasis is on the definitions, parameters, and underlying principles of wavefront description, while the more general measurement workflow is framed around phase data and its interpretation.

• Defines the conceptual basis for measuring and interpreting wavefront phase distribution.
• Sets out parameters used to describe wavefront deformation and how they are determined from phase measurements.
• Supports the reporting of quantitative wavefront results together with measurement uncertainty.
• Applies to beam types from both continuous-wave and pulsed lasers.