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Fourier-transform optical microsystems.

S D Collins1, R L Smith, C Gonzalez

  • 1MicroInstruments and Systems Laboratory, Department of Electrical and Computer Engineering, University of California, Davis 95616, USA. collins@ece.ucdavis.edu

Optics Letters
|September 7, 2001
PubMed
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This study presents a miniature Fourier-transform spectrometer (FTS) with a compact optical bench. The microfabricated device achieves high spectral resolution (0.1 cm-1) and adequate optical throughput.

Area of Science:

  • Optics and Photonics
  • Microfabrication
  • Spectroscopy

Background:

  • Fourier-transform spectroscopy (FTS) is a powerful technique for spectral analysis.
  • Miniaturization of optical instruments is crucial for portable and in-situ applications.
  • Traditional FTS designs can be bulky and complex.

Purpose of the Study:

  • To design and fabricate a highly miniaturized single-pass Fourier-transform spectrometer.
  • To achieve high spectral resolution and adequate optical throughput in a compact form factor.
  • To demonstrate the feasibility of microfabrication techniques for creating precision optical components.

Main Methods:

  • The FTS is based on the classic Michelson interferometer design.
  • Precision translation of the moving mirror is achieved using microfabricated dovetailed bearing surfaces in silicon.
Keywords:
NASA Discipline Environmental HealthNon-NASA Center

Related Experiment Videos

  • The optical bench measures a compact 1 cm x 5 cm x 10 cm.

    • Main Results:

    • Successful design, fabrication, and initial characterization of the miniature FTS.
    • The device maintains a spectral resolution of 0.1 cm-1.
    • Adequate optical throughput was achieved despite the miniaturized design.

    Conclusions:

    • The developed miniature FTS demonstrates the potential for high-performance spectroscopy in a compact device.
    • Microfabrication techniques enable the creation of precision optical components for miniaturized spectrometers.
    • This work paves the way for portable and advanced spectroscopic instrumentation.