Stable Monolithic Interferometer for High Precision Calibration

Technology #13218

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Researchers
Xiaoke Wan
Jian Ge
Managed By
Richard Croley
Assistant Director 352-392-8929
Patent Protection
US Patent 8,570,524

Invention

The University of Florida is seeking companies interested in commercializing a low-cost, high-quality wavelength calibration standard using a precise and efficient Michelson interferometer. Other systems currently in use are attractive because of their simplicity and minimal expense, but now it has been realized that utilizing a stable Michelson interferometer as a calibration source produces an unparalleled advantage in wavelength and special multiplexing. Also, thanks to the technical breakthroughs in design and fabrication of monolithic Michelson interferometers, the overall stability has been improved, and the manufacturing expense has been significantly reduced. Researchers at the University of Florida have developed this novel system that demonstrates significant advantages in precision, ease in utility, compatibility, multiplexing capacity, stability and bandwidth.

Application

Michelson interferometer used as a wavelength calibration reference for spectrometers, tunable lasers or other spectral instruments and as a stable wavelength reference for laser wavelength stabilization or characterization

Advantages

  • Able to achieve an optimal sensitivity limit, making it more compatible to various spectral instruments in high precision calibration
  • Innovative design and fabrication, improving stability and reducing manufacturing expenses
  • Higher throughput because of filed compensation advantage, making it highly effective in weak light applications
  • Expanded wavelength coverage, increasing the advantage in wavelength and special multiplexing capacity

Technology

This system encompasses two new breakthroughs for using a stable Michelson interferometer in wavelength calibration; as a reference for spectrometers, tunable lasers or other spectral instruments and as a stable wavelength reference for laser wavelength stabilization or characterization. A stable Michelson interferometer can reach the optimal sensitivity needed for calibration. Because of the simple sinusoid frequency response of a Michelson interferometer, the phase interpretation is very convenient and the accuracy is often determined by the sensitivity limit. Current systems only operate at either too high or too low of a sensitivity level to be very effective, making them more complicated. Using the Michelson interferometer, it is more compatible to various spectral instruments in high precision calibration. Using the new inventions in interferometer design and fabrication, Michelson interferometer becomes competitive in cost as well. This stable monolithic Michelson interferometer is ultimately more attractive and has numerous applications.