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Related Experiment Video

Updated: Jun 19, 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

Differential interference contrast imaging using a spatial light modulator.

Timothy J McIntyre¹, Christian Maurer, Stefan Bernet

¹School of Mathematics and Physics, The University of Queensland, Brisbane 4072, Australia. t.mcintyre@uq.edu.au

|October 2, 2009

Summary

This summary is machine-generated.

A new electronically controlled differential interference contrast microscopy method uses a liquid-crystal spatial light modulator for nonmechanical control of imaging parameters, enhancing microscopy capabilities.

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Area of Science:

Optical microscopy
Classical microscopy techniques
Interferometric imaging

Background:

Differential interference contrast (DIC) microscopy is a sophisticated classical imaging method.
Traditional DIC microscopy relies on mechanical components to control imaging parameters.

Purpose of the Study:

To develop a versatile, electronically controlled variant of differential interference contrast microscopy.
To enable nonmechanical, real-time control over all DIC imaging parameters.

Main Methods:

Utilized a liquid-crystal spatial light modulator (SLM) to display a diffractive optical element.
The SLM steered beam separation, controlling orientation and magnitude of shear angle.
Varied relative phase of interfering beams at video rates.

Main Results:

Demonstrated a versatile electronically controlled DIC microscopy system.
Successfully imaged polystyrene beads and red blood cells with the new method.
Achieved nonmechanical control over shear angle and phase at video rates.

Conclusions:

The electronically controlled DIC microscopy expands capabilities beyond previous implementations.
Nonmechanical control over all imaging parameters offers enhanced versatility and precision.
This technique represents a significant advancement in interferometric microscopy.