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Fast single-photon avalanche diode arrays for laser Raman spectroscopy

Blacksberg, Jordana and Maruyama, Yuki and Charbon, Edoardo and Rossman, George R. (2011) Fast single-photon avalanche diode arrays for laser Raman spectroscopy. Optics Letters, 36 (18). pp. 3672-3674. ISSN 0146-9592.

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We incorporate newly developed solid-state detector technology into time-resolved laser Raman spectroscopy, demonstrating the ability to distinguish spectra from Raman and fluorescence processes. As a proof of concept, we show fluorescence rejection on highly fluorescent mineral samples willemite and spodumene using a 128×128 single-photon avalanche diode (SPAD) array with a measured photon detection efficiency of 5%. The sensitivity achieved in this new instrument architecture is comparable to the sensitivity of a technically more complicated system using a traditional photocathode-based imager. By increasing the SPAD active area and improving coupling efficiency, we expect further improvements in sensitivity by over an order of magnitude. We discuss the relevance of these results to in situ planetary instruments, where size, weight, power, and radiation hardness are of prime concern. The potential large-scale manufacturability of silicon SPAD arrays makes them prime candidates for future portable and in situ Raman instruments spanning numerous applications where fluorescence interference is problematic.

Item Type:Article
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URLURL TypeDescription PublisherUNSPECIFIED
Rossman, George R.0000-0002-4571-6884
Additional Information:© 2011 Optical Society of America. Received June 30, 2011; revised July 26, 2011; accepted August 21, 2011; posted August 22, 2011 (Doc. ID 150202); published September 14, 2011. The research described in this publication was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA). SPAD development was performed at Delft University of Technology, and CW Raman measurements at Caltech.
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Issue or Number:18
Classification Code:OCIS codes: 300.6450, 300.6500, 040.1345, 040.6070
Record Number:CaltechAUTHORS:20110930-142046690
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Official Citation:Jordana Blacksberg, Yuki Maruyama, Edoardo Charbon, and George R. Rossman, "Fast single-photon avalanche diode arrays for laser Raman spectroscopy," Opt. Lett. 36, 3672-3674 (2011)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:25515
Deposited By: Tony Diaz
Deposited On:05 Oct 2011 21:30
Last Modified:03 Oct 2019 03:06

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