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UV–Vis Spectrometers01:14

UV–Vis Spectrometers

The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell. Samples for...
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Label-free Single Molecule Detection Using Microtoroid Optical Resonators
08:53

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Published on: December 29, 2015

Application of a microcomputer to optical spectroscopy.

D A Jackson, R G Priest

    Applied Optics
    |March 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A novel, low-cost microcomputer controller enhances scanning instruments like interferometers and monochromators. This versatile system offers passive or active control modes with minimal reprogramming for diverse scientific applications.

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    Published on: August 22, 2019

    Area of Science:

    • Spectroscopy and Optical Instrumentation
    • Computer Engineering and Embedded Systems

    Background:

    • Traditional scanning instrument control systems can be expensive and complex.
    • There is a need for adaptable, cost-effective control solutions in scientific research.

    Purpose of the Study:

    • To develop and describe a low-cost microcomputer-based controller for scanning instruments.
    • To demonstrate the controller's adaptability to different optical setups, specifically Fabry-Perot interferometers and grating monochromators.
    • To present both passive and active control modes for enhanced functionality.

    Main Methods:

    • Utilized a commercially available single-board computer as the core of the controller.
    • Designed interface circuitry for seamless integration with optical instruments.
    • Developed read-only memory (ROM) held programs for passive (multichannel analyzer replacement) and active control modes.
    • Implemented typical programming examples for system adaptation.

    Main Results:

    • Successfully implemented a low-cost scanning instrument controller.
    • Demonstrated the controller's compatibility with both Fabry-Perot interferometers and grating monochromators.
    • Validated the dual functionality in passive and active control modes.
    • Showcased the ease of adaptation through simple program changes.

    Conclusions:

    • The microcomputer-based controller offers an affordable and versatile solution for controlling scanning optical instruments.
    • The system's modular design and adaptable software facilitate its use across various spectroscopic applications.
    • This development can significantly reduce the cost of advanced optical measurement setups.