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Optical microscopy uses optic principles to provide detailed images of samples. Antonie van Leeuwenhoek designed the first compound optical microscope in the 17th century to visualize blood cells, bacteria, and yeast cells. In 1830, Joseph Jackson Lister created an essentially modern light microscope. The 20th century saw the development of microscopes with enhanced magnification and resolution.
In optical microscopy, the specimen to be viewed is placed on a glass slide and clipped on the stage...
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Published on: May 3, 2011

Amplification by optical composites.

D B Barber, C R Pollock, L L Beecroft

    Optics Letters
    |August 15, 1997
    PubMed
    Summary

    Optical amplification was achieved in composite waveguides using embedded Cr:forsterite or Cr:diopside nanocrystals. This novel material demonstrated a small-signal gain of 1dB/cm at 1.23microm wavelength.

    Area of Science:

    • Materials Science
    • Optics and Photonics
    • Nanotechnology

    Background:

    • Developing efficient optical amplifiers is crucial for advancing photonic technologies.
    • Composite materials offer tunable properties for advanced optical applications.

    Purpose of the Study:

    • To demonstrate optical amplification in novel composite materials.
    • To investigate the performance of chromium-doped forsterite and diopside nanocrystals in polymer waveguides.

    Main Methods:

    • Fabrication of composite waveguides with embedded Cr:forsterite or Cr:diopside nanocrystals.
    • Matching the refractive index between nanocrystals and the host polymer.
    • Characterization of optical amplification using small-signal gain measurements.

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    Main Results:

    • Successful demonstration of optical amplification in the composite waveguides.
    • Achieved a small-signal gain of 1dB/cm at a wavelength of 1.23 micrometers.
    • Verified the effectiveness of refractive index matching for enhanced performance.

    Conclusions:

    • Composite materials with embedded nanocrystals are viable for optical amplification.
    • The demonstrated gain suggests potential for integrated photonic devices.
    • Refractive index matching is a key parameter for optimizing gain in such materials.