Visible Fourier Transform Spectrometer based on double beam-folding interferometers

Xuzhu Wang*, Zhicai Xing, Robert K Y CHAN

*Corresponding author for this work

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

Abstract

A Visible Fourier Transform Spectrometer(FTS) based on double beam-folding interferometers is reported. The FTS comprises two back-to-back interferometers, that share the same translation stage, used for position tracking and spectral measurement of the measured light. Therefore, the change of the optical path difference (OPD) of the position-tracking interferometer is always synchronous to that of the measured light interferometer during the scanning process. The beamfolding technique is used in both interferometers. The positiontracking interferometer is 4-fold, while the measured light interfeormeter is 2-fold, thus the FTS can cover the visible range. The advantage of double beam-folding setup is the reduced demand for translation range, that makes the FTS more compact. We have demonstrated a Visible FTS with a standard quality ball-bearing translation stage, and a He-Ne laser and a S60 lamp were used the light source to evaluates the FTS. It achieved a resolution of ∼ 0.5 cm-1 and a peak position deviation of 0.24 cm-1 at the He-Ne laser wavelength when the scan distance reaches the travel distance of over 1 cm. This was achieved without the need for elaborate optics, sophisticated detecting electronics and highprecision servo motion control. The optical components used in the detecting system limit the spectral range to 350nm-1.1μm. High quality translation stage should be used in order to achieve higher instrumental spectral resolutions.

Original languageEnglish
Title of host publication2011 Symposium on Photonics and Optoelectronics, SOPO 2011
DOIs
Publication statusPublished - 2011
Event2011 Symposium on Photonics and Optoelectronics, SOPO 2011 - Wuhan, China
Duration: 16 May 201118 May 2011

Publication series

Name2011 Symposium on Photonics and Optoelectronics, SOPO 2011

Conference

Conference2011 Symposium on Photonics and Optoelectronics, SOPO 2011
Country/TerritoryChina
CityWuhan
Period16/05/1118/05/11

Scopus Subject Areas

  • Electrical and Electronic Engineering

User-Defined Keywords

  • Beam-folding technique
  • Fourier transform spectrometer
  • Visible

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