Journal article
Towards a portable Raman spectrometer using a concave grating and a time-gated CMOS SPAD
Abstract
A low-cost, compact Raman spectrometer suitable for the on-line water monitoring applications is explored. A custom-designed concave grating for wavelength selection was fabricated and tested. The detection of the Raman signal is accomplished with a time-gated single photon avalanche diode (TG-SPAD). A fixed gate window of 3.5ns is designed and applied to the TG-SPAD. The temporal resolution of the SPAD was ~60ps when tested with a 7ps, 532nm …
Authors
Li Z; Deen MJ
Journal
Optics Express, Vol. 22, No. 15, pp. 18736–18747
Publisher
Optica Publishing Group
Publication Date
July 28, 2014
DOI
10.1364/oe.22.018736
ISSN
1094-4087