Miniaturized time-resolved Raman spectrometer for planetary science based on a fast single photon avalanche diode detector array
Abstract
We present recent developments in time-resolved Raman spectroscopy instrumentation and measurement techniques for in situ planetary surface exploration, leading to improved performance and identification of minerals and organics. The time-resolved Raman spectrometer uses a 532 nm pulsed microchip laser source synchronized with a single photon avalanche diode array to achieve sub-nanosecond time resolution. This instrument can detect Raman spectral signatures from a wide variety of minerals and organics relevant to planetary science while eliminating pervasive background interference caused by fluorescence. We present an overview of the instrument design and operation and demonstrate high signal-to-noise ratio Raman spectra for several relevant samples of sulfates, clays, and polycyclic aromatic hydrocarbons. Finally, we present an instrument design suitable for operation on a rover or lander and discuss future directions that promise great advancement in capability.
Additional Information
© 2016 Optical Society of America. Received 7 October 2015; revised 11 December 2015; accepted 11 December 2015; posted 15 December 2015 (Doc. ID 251466);published 22 January 2016. Funding: National Aeronautics and Space Administration (NASA) (104528-811073.02.06.02.25). The research described here was carried out at the Jet Propulsion Laboratory, California Institute of Technology, under a contract with the National Aeronautics and Space Administration (NASA). This work was supported in part by the NASA Planetary Instrument Definition and Development Program (PIDDP). Continuous-wave Raman measurements were performed at the Mineral Spectroscopy Laboratory at the California Institute of Technology. SPAD development was performed at Delft University of Technology by the group of Professor Edoardo Charbon. We would like to acknowledge Professor Jack Farmer at ASU for useful input regarding time-resolved Raman for identification of fossilized organic matter and for geologic interpretations of Griffith Park samples.Attached Files
Published - ao-55-4-739.pdf
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Additional details
- Eprint ID
- 64573
- Resolver ID
- CaltechAUTHORS:20160218-133327928
- 104528-811073.02.06.02.25
- NASA
- NASA/JPL/Caltech
- Created
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2016-02-18Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field
- Caltech groups
- Division of Geological and Planetary Sciences