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Updated: Jun 16, 2026

Characterizing Far-infrared Laser Emissions and the Measurement of Their Frequencies
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A Precision Variable, Double Prism Attenuator for CO(2) Lasers.

T Oseki, S Saito

    Applied Optics
    |January 23, 2010
    PubMed
    Summary

    A novel double prism attenuator for carbon dioxide (CO(2)) lasers offers high accuracy for attenuation measurements. This device, calibrated using gap capacitance, achieves 0.1 dB accuracy over a 40 dB dynamic range.

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    Area of Science:

    • Optics and Photonics
    • Laser Technology
    • Metrology

    Background:

    • Accurate attenuation measurements are crucial for laser applications.
    • Existing methods for CO(2) laser attenuation may lack precision or a standardized approach.

    Purpose of the Study:

    • To develop and evaluate a precision double prism attenuator for CO(2) lasers.
    • To assess its suitability as a standard for attenuation measurements.
    • To determine the accuracy and dynamic range of the developed attenuator.

    Main Methods:

    • Construction of a double prism attenuator.
    • Calibration of the attenuator using gap capacitance.
    • Evaluation of attenuation measurement accuracy and dynamic range.

    Main Results:

    • The constructed double prism attenuator demonstrated high precision.
    • Accuracy of approximately 0.1 dB was achieved.
    • A dynamic range of approximately 40 dB was determined.

    Conclusions:

    • The precision double prism attenuator is a viable candidate for a standard in CO(2) laser attenuation measurements.
    • The gap capacitance calibration method provides reliable accuracy.
    • The device offers a significant dynamic range suitable for various applications.

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