Measure laser beam profiles in real time with a reflection-based system .
This technical work presents a unit that can sample a laser’s irradiance and phase front across multiple wavelengths with fast, continuous data output.
This edition details how the apparatus uses mirrors and a reflection hologram to capture beam profiles near 10 cm in diameter, with phase-front variations under five wavelengths. It explains calibration that is done piecewise for neighboring sampling holes spaced 5 mm apart, and it compares holography with the Hartmann plate approach to show why the holographic method is preferred for standard measurements.
What you’ll learn
- How the device measures both irradiance and phase front in real time.
- How changing two mirrors lets the same setup handle different wavelengths (1.06–10.6 micrometers).
- Why sampling is simultaneous and how phase-front information is generated before detectors.
- Overview of the BEAM computer program that models the system’s behavior.
Ideal for readers of advanced laser diagnostics, optical engineering, and beam profiling: those seeking a practical, calibrated approach to measuring laser beams with high accuracy.