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Phase-randomized laser illumination for microscopy.

R Hard, R Zeh, R D Allen

    Journal of Cell Science
    |February 1, 1977
    PubMed
    Summary
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    A novel apparatus phase randomizes laser output for high-intensity monochromatic microscopy. This versatile system enhances various microscopy techniques and photometric studies, proving safe for cell imaging.

    Area of Science:

    • Optics and Photonics
    • Microscopy
    • Biophotonics

    Background:

    • High-intensity monochromatic light sources are crucial for advanced microscopy.
    • Existing laser systems may require phase randomization for specific applications.
    • Cellular phototoxicity is a concern in high-intensity light microscopy.

    Purpose of the Study:

    • To describe a simple apparatus for phase randomizing continuous laser output.
    • To enable the use of lasers as high-intensity, monochromatic light sources for microscopy.
    • To demonstrate the versatility and safety of the phase-randomizing system.

    Main Methods:

    • Development of a simple phase-randomizing apparatus for laser output.
    • Integration of the apparatus with various laser types (argon ion, dye lasers).

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  • Adaptation of the system to diverse light microscopy and optical configurations (bright-field, phase-contrast, Nomarski, dark-field, Jamin-Lebedeff).

    • Main Results:

    • The apparatus successfully phase randomizes laser output for microscopy.
    • The system is compatible with polarized/unpolarized lasers of varying power and wavelength.
    • The 514-nm wavelength demonstrated minimal harm to various cell types.

    Conclusions:

    • The described apparatus provides a versatile solution for generating high-intensity, monochromatic light for microscopy.
    • The phase-randomizing system enhances a wide range of optical microscopy techniques.
    • The system offers a safe and effective method for photometric and photographic studies in cell biology.