Fourier transform ultraviolet-visible spectrometer based on a beam-folding technique.
A beam-folding technique in optical interferometry, where the number of beam folds used can be very large, is reported. This technique can be used as a low-cost position-tracking method in a Fourier transform spectrometer (FTS) to cover the broad spectral range from UV to IR. The main advantage gained is the simple position-tracking algorithm used in sampling the interferogram. We have developed a UV-visible FTS, whose wavelength coverage is limited only by the optical elements (350 nm(-1) microm with off-the-shelf components). Preliminary results show that it can achieve a resolution of approximately 4 cm(-1) even with a ball-bearing translation stage.
Chan
Robert K Y
RK
Department of Physics, Hong Kong Baptist University, 224 Waterloo Road, Hong Kong, China. rchan@hkbu.edu.hk
Lim
P K
PK
Wang
Xuzhu
X
Chan
M H
MH
D000465:Algorithms; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation* / Q000379:methods; D013056:Spectrophotometry, Ultraviolet / Q000295:instrumentation* / Q000379:methods; D017550:Spectroscopy, Fourier Transform Infrared / Q000295:instrumentation* / Q000379:methods