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Related Experiment Video

Updated: May 16, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

Chalmers interferometric test using a reflective spatial light modulator.

B Canales-Pacheco¹, A Cornejo-Rodríguez, F Granados-Agustín

¹Instituto Nacional de Astrofísica Óptica y Electrónica, Apartado Postal 51 y 216, Puebla PUE 72000, México. canales321@inaoep.mx

|November 29, 2012

Summary

This summary is machine-generated.

A novel reflective spatial light modulator (RSLM) replaces traditional metal plates for Chalmers interferometric tests. This innovation enhances accuracy and efficiency in surface and lens testing by enabling flexible interference pattern generation.

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Area of Science:

Optical Engineering
Metrology

Background:

Chalmers interferometric tests traditionally use metal plates with fixed holes.
Existing methods can be time-consuming and limited in scope for surface analysis.

Purpose of the Study:

To introduce a more adaptable and precise method for generating interference patterns in interferometric testing.
To improve the accuracy and efficiency of surface and lens testing.

Main Methods:

Utilizing a PC-controlled reflective spatial light modulator (RSLM) to create interference patterns.
Replacing the conventional metal plate with an RSLM for dynamic aperture control.

Main Results:

The RSLM allows for the selection of any surface zone for testing by adjusting apertures.
Demonstrated increased accuracy in interferometric measurements.
Reduced overall testing time compared to traditional methods.

Conclusions:

The RSLM offers a significant advancement over traditional methods for Chalmers interferometric tests.
This technology enhances precision and efficiency in optical surface and lens metrology.