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Related Experiment Video

Updated: Jun 8, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
12:14

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry

Published on: August 12, 2013

Using gradient-index lenses for laser-beam expansion in interferometry.

T W Ng, F S Chau

    Applied Optics
    |September 11, 2010
    PubMed
    Summary

    Gradient-index lenses improve laser interferometry by reducing surface defects, enhancing fringe visibility and minimizing alignment needs. This optical approach offers superior performance over conventional convex lenses.

    Area of Science:

    • Optics and Photonics
    • Interferometry
    • Laser Technology

    Background:

    • Conventional interferometry often suffers from reduced fringe visibility and light loss due to surface defects in traditional convex lenses.
    • Stringent alignment procedures are typically required to achieve optimal performance in interferometric setups.

    Purpose of the Study:

    • To investigate the efficacy of gradient-index (GRIN) lenses for laser-beam expansion in interferometry.
    • To evaluate the impact of GRIN lenses on fringe visibility, light intensity, and alignment requirements compared to conventional lenses.

    Main Methods:

    • Utilized gradient-index lenses for laser-beam expansion within an interferometric system.
    • Compared the performance metrics (fringe visibility, light intensity, alignment sensitivity) against systems employing conventional convex lenses.

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    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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    Last Updated: Jun 8, 2026

    The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
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    Published on: August 12, 2013

    Constructing a Low-budget Laser Axotomy System to Study Axon Regeneration in C. elegans
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    Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
    08:39

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

    Published on: January 28, 2019

    Main Results:

    • Gradient-index lenses demonstrated inherently fewer surface defects compared to conventional convex lenses.
    • The use of GRIN lenses resulted in improved fringe visibility without compromising light intensity.
    • Interferometric setups utilizing GRIN lenses exhibited reduced sensitivity to stringent alignment requirements.

    Conclusions:

    • Gradient-index lenses offer a significant advantage for laser-beam expansion in interferometry.
    • GRIN lenses provide enhanced optical performance, simplifying experimental setups and improving measurement accuracy.