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Broadband and High-Resolution Static Fourier Transform Spectrometer with Bandpass Sampling.

Meriç Özcan1, Behzad Sardari1

  • 1Faculty of Engineering and Natural Sciences, Sabanci University, İstanbul, Turkey.

Applied Spectroscopy
|April 18, 2018
PubMed
Summary

This study presents a novel static Fourier transform spectrometer (static-FTS) that overcomes Nyquist limitations. The new design enables high-resolution, wideband spectral recording with potential resolution better than 2 cm-1.

Keywords:
Static Fourier transform spectrometerbroadband spectrometerhigh-resolution spectrometerstatic FTS bandpass sampling

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Area of Science:

  • Spectroscopy
  • Optical Engineering
  • Signal Processing

Background:

  • Fourier transform spectrometers (FTS) are crucial for spectral analysis.
  • Traditional FTS face limitations related to the Nyquist sampling rate.
  • Wideband spectral recording often requires high resolution, posing a challenge.

Purpose of the Study:

  • To experimentally demonstrate a novel static Fourier transform spectrometer (static-FTS).
  • To address Nyquist sampling rate limitations in spectral analysis.
  • To achieve high-resolution, wideband spectral recording.

Main Methods:

  • Developed a static Fourier transform spectrometer (static-FTS).
  • Employed a bandpass sampling technique.
  • Divided the spectrum into multiple narrowband signals for analysis.

Main Results:

  • Successfully demonstrated the static-FTS experimentally.
  • The bandpass sampling technique overcame Nyquist sampling rate limitations.
  • Achieved high-resolution recording of a wideband spectrum.
  • Demonstrated potential resolution better than 2 cm-1.

Conclusions:

  • The proposed static-FTS design is a viable solution for high-resolution spectral analysis.
  • This novel approach enables overcoming fundamental sampling limitations.
  • The spectrometer shows potential for wide spectral range operation and high resolution.