Physics – Optics
Scientific paper
Oct 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5578..227p&link_type=abstract
Photonics North 2004: Optical Components and Devices. Edited by Armitage, John C.; Fafard, Simon; Lessard, Roger A.; Lampropoul
Physics
Optics
Scientific paper
The described system applies advanced Volume Phase Holographic (VPH) diffraction gratings to provide a high-performance, line imaging / multichannel spectrometer. Specifically designed optics produces spectrally dispersed image of the input slit on a two dimensional array of photodetectors in such a way that the full width, half maximum (FWHM) of monochromatic image of each point of the slit is not larger than a single pixel at the detector end. Correcting for aberrations typical to most other multichannel spectrometers allows for the creation of an instrument with very high spatial and spectral resolutions. Appropriate selection of collection fibers arranged along an entrance slit of the spectrometer renders the system into a multichannel spectrometer, where the number of channels is determined by the number of fibers within an 8mm long slit and their separation. The superior performance of the instrument opens the door to numerous applications in technical and biomedical research, process control, homeland security and other application where high performance and/or simultaneous spectral measurement of UV/VIS/NIR radiation produced at multiple sites is required.
Pawluczyk Olga
Pawluczyk Romuald
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