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Related Experiment Video

Updated: Jun 22, 2026

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
08:39

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Published on: January 28, 2019

Programmable apodizer to compensate chromatic aberration effects using a liquid crystal spatial light modulator.

A Márquez, C Iemmi, J Campos

    Optics Express
    |June 5, 2009
    PubMed
    Summary

    Programmable apodizers on liquid crystal spatial light modulators (LCSLMs) can now modify optical system performance with polychromatic light. This study demonstrates an axial apodizing filter compensating for longitudinal secondary axial color effects.

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    Area of Science:

    • Optics
    • Optical Engineering
    • Photonics

    Background:

    • Liquid Crystal Spatial Light Modulators (LCSLMs) enable flexible modification of optical system point spread functions (PSFs) in monochromatic light.
    • Extending LCSLM apodizers to polychromatic light requires managing wavelength-dependent liquid crystal responses and designing appropriate apodizers.
    • Longitudinal Secondary Axial Color (LSAC) is a chromatic aberration affecting the PSF in optical systems illuminated with polychromatic light.

    Purpose of the Study:

    • To demonstrate the successful application of a programmable amplitude apodizer using polychromatic light.
    • To investigate the compensation of Longitudinal Secondary Axial Color (LSAC) effects in a refractive optical system using an axial apodizing filter.
    • To optimize LCSLM configuration for efficient amplitude transmission across a spectrum of wavelengths.

    Main Methods:

    • Implementation of a programmable amplitude apodizer on an LCSLM.
    • Illumination of the optical system with polychromatic light.
    • Design and application of an axial apodizing filter to mitigate LSAC.
    • Optimization of LCSLM parameters for broadband amplitude transmission.
    • Comparison of experimental results with simulated data.

    Main Results:

    • Successful demonstration of a programmable amplitude apodizer operating with polychromatic light.
    • Effective compensation of LSAC effects in a refractive optical system, leading to improved polychromatic PSF.
    • Achieved good amplitude transmission across the polychromatic spectrum through LCSLM configuration optimization.
    • Experimental and simulated results showed strong agreement, validating the proposed method.

    Conclusions:

    • Programmable LCSLM apodizers are feasible for polychromatic light applications.
    • Axial apodizing filters can effectively correct for LSAC aberrations in optical systems.
    • The developed method offers a flexible approach to control chromatic properties of optical systems.