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.
© 2001 Optical Society of America
[Optical Society of America ]
(050.0050) Diffraction and gratings : Diffraction and gratings
Helen L. Kung, Aparna Bhatnagar, and David A. B. Miller, "Transform spectrometer based on measuring the periodicity of Talbot self-images," Opt. Lett. 26, 1645-1647 (2001)