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H. L. Kung, A. Bhatnagar, and D. A. B. Miller
"Transform spectrometer based on measuring the periodicity of
Talbot self-images" Optics Lett. 26, 1645-1647 (2001) We
demonstrate a compact transform spectrometer based on measuring the
periodicity of Talbot self-images. The system has no moving parts; it
contains only a tilted absorption grating that is imaged onto a CCD
camera. The linear architecture of the system makes it possible to use
this design in imaging arrays of spectrometers. Unlike other transform
spectrometers, its resolution is independent of wavelength.
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