Related Experiment Videos
Fourier transform ultraviolet-visible spectrometer based on a beam-folding technique
Robert K Y Chan1, P K Lim, Xuzhu Wang
1Department of Physics, Hong Kong Baptist University, 224 Waterloo Road, Hong Kong, China. rchan@hkbu.edu.hk
Optics Letters
|April 8, 2006
Summary
A novel beam-folding technique enhances optical interferometry for Fourier transform spectrometers (FTS). This method offers a low-cost position-tracking solution for broad UV-to-IR spectral range measurements.
Area of Science:
- Optical Interferometry
- Spectroscopy
Background:
- Fourier transform spectrometers (FTS) require precise position tracking for interferogram sampling.
- Broad spectral range measurements (UV to IR) are crucial in various scientific applications.
Purpose of the Study:
- To report a novel beam-folding technique for optical interferometry.
- To present this technique as a low-cost position-tracking method for FTS.
- To demonstrate its applicability for broad spectral range measurements.
Main Methods:
- Implementation of a beam-folding technique with a potentially large number of folds.
- Development of a UV-visible Fourier transform spectrometer (FTS).
- Utilizing off-the-shelf optical components for wavelength coverage from 350 nm to 1 µm.
Main Results:
- The beam-folding technique enables a simple position-tracking algorithm for interferogram sampling.
- A UV-visible FTS was successfully developed.
- Preliminary results indicate a spectral resolution of approximately 4 cm⁻¹ was achieved, even with a basic translation stage.
Conclusions:
- The reported beam-folding technique is effective for low-cost position tracking in FTS.
- This method facilitates broad spectral range measurements with a simplified algorithm.
- The developed UV-visible FTS demonstrates promising resolution capabilities.