SIST EN ISO 12005:2022 PDF

Overview

EN ISO 12005:2022 - "Lasers and laser-related equipment - Test methods for laser beam parameters - Polarization" - is a CEN-adopted international standard that defines a practical, minimum-equipment method to determine the polarization status and, where possible, the degree of polarization of continuous-wave (cw) lasers and repetitively pulsed lasers whose electric-field orientation is stable pulse-to-pulse. The standard applies to quasimonochromatic radiation with uniform polarization across the beam cross section and is suitable for narrow, highly collimated beams as well as highly divergent beams and large-aperture beams. EN ISO 12005:2022 supersedes the 2003 edition.

Key Topics

• Scope and applicability: cw and compatible pulsed lasers; uniform polarization; divergent and large-aperture beams.
• Measurement principle: simple, quick test method to classify the state of polarization (linear, circular, elliptical, unpolarized) and to determine the direction of the electric-field vector for linearly polarized beams.
• Equipment arrangement: general setups and special arrangements for high-divergence or large-aperture beams.
• Required components:
  • Radiation detector for power/energy measurement
  • Linear polarizer (with extinction ratio considerations)
  • Quarter-wave plate for circular/elliptical tests
  • Optical attenuator where needed
• Test procedure: stepwise measurements (Measurement 1 and Measurement 2) and analysis that yield polarization classification and estimates of degree of polarization.
• Analysis & reporting: guidance on result interpretation and required contents of the test report.
• Annex A: informative material on a complete description of polarization including Stokes parameters for more advanced analysis.

Applications

EN ISO 12005:2022 is relevant wherever knowledge of laser polarization is critical, for example:

• Coupling laser beams to polarization-dependent devices (e.g., polarization-maintaining fibres)
• Optical component and systems testing in photonics and optoelectronics
• Quality control and acceptance testing by laser manufacturers and independent test labs
• R&D labs characterizing lasers for sensors, communications, material processing, and instrumentation

Who Should Use It

• Photonics engineers and test laboratory personnel
• Laser and optics manufacturers
• System integrators working with fiber coupling or polarization-sensitive optics
• Standards and compliance specialists

Related Standards

• ISO 11145 (vocabulary and symbols for lasers)
• ISO 11554 (test methods for laser power, energy and temporal characteristics)
• CIE 059-1984 (instrument polarization terminology)

Keywords: EN ISO 12005:2022, polarization test method, laser beam parameters, degree of polarization, linear polarizer, polarization maintaining fibres, Stokes parameters.