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Related Concept Videos

Scanning Electron Microscopy01:07

Scanning Electron Microscopy

A scanning electron microscope (SEM) is used to study the surface features of a sample by using an electron beam that scans the sample surface in a two-dimensional manner. Typically, areas between ~1 centimeter to 5 micrometers in width can be imaged. SEM can be used to image bacteria, viruses, tissues as well as larger samples like insects. Conventional SEM gives a magnification ranging from 20X to 30,000X and spatial resolution of 50 to 100 nanometers.
Fundamental Principles
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Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator
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Published on: January 28, 2019

Synthesis for an electrooptic light scanner with an arbitrary beam shape.

M Okada, S Ieiri

    Applied Optics
    |January 23, 2010
    PubMed
    Summary
    This summary is machine-generated.

    Synthesized electrooptic light scanners precisely control light beam distribution using cascaded stages with birefringent crystals. These methods offer flexible designs for custom one-dimensional spatial light beam shaping.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Electrooptic light scanners are crucial for controlling light beam spatial distribution.
    • Existing methods may lack flexibility in achieving arbitrary one-dimensional light distributions.

    Purpose of the Study:

    • To present two novel methods for synthesizing electrooptic light scanners.
    • To enable precise control over the one-dimensional spatial distribution of a light beam.

    Main Methods:

    • Developing cascaded stages, each with a natural-birefringent electrooptic crystal and an inclination angle.
    • Method 1: Utilizing cascaded stages with polarizers, electrooptic crystals, optical compensators, and analyzers.
    • Method 2: Employing multistage construction with electrooptic crystals and optical compensators between input/output polarizers.

    Main Results:

    • Demonstrated synthesis procedures for electrooptic light scanners with prescribed spatial light distributions.
    • Provided two illustrative examples for each synthesis method.
    • Validated the capability to achieve arbitrary one-dimensional light beam profiles.

    Conclusions:

    • The presented methods offer effective and flexible approaches for synthesizing electrooptic light scanners.
    • These techniques allow for precise tailoring of light beam spatial profiles for various applications.
    • The modular, cascaded stage design facilitates custom scanner construction.