Principles and Spectroscopic Applications of Volume Holographic Optics

Tedesco, James M.; Owen, Harry; Pallister, David M.; Morris, Michael D.

doi:10.1021/ac00057a722

Cited by 66 publications

(11 citation statements)

References 16 publications

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“…In addition, the highly efficient components facilitated a phenomenal volume and mass reduction of Raman systems. These high performance Raman systems and their robust applications in industry, [10] as well as the durability of their key components in harsh environments, opened the door for developing small, robust, and high performing flight Raman systems for planetary surface explorations.…”

Section: Introductionmentioning

confidence: 99%

Quantification of fluorescence emission from extraterrestrial materials and its significance for planetary Raman spectroscopy

Wang

Wei

Korotev

2019

J Raman Spectroscopy

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Fluorescence emission has been a serious impediment in the application of Raman spectroscopy to terrestrial geologic samples. It is largely unknown how significant the fluorescence problem would affect Raman analyses during a planetary surface exploration mission. We have completed a set of two experimental studies to quantitatively evaluate the fluorescence emission excited by multiple wavelengths from a set of 21 stony meteorites that represent 98.9% (by types) of all stony meteorites collected, named, and classified worldwide. Our data revealed a general trend, that is, the non‐Raman emission intensities of extraterrestrial materials are two to three orders of magnitude lower than those of typical terrestrial clays and the soils from hyperarid Mars‐analog region (Atacama Desert). Based on >4,500 Raman spectra (excited by continuous wave [continuous wave] 532‐nm laser line) obtained by auto‐scans on these 21 meteorites, we found that the average percentage of informative Raman spectra is nearly 98%, with a standard deviation of 2% and the lowest value of 93%. We also found that the information on major and minor mineral phases revealed by our multispots Raman measurements are consistent with those published in Meteoritic Bulletin database for the examined meteorites. In conclusion, our experimental results demonstrated that the fluorescence interference that sometimes concealed the Raman signals of terrestrial samples would not be a threat to planetary Raman spectroscopy that uses CW 532‐nm laser line for excitation. This conclusion is consistent with the in situ fluorescence observations made during two missions on Mars and with many Raman spectroscopic studies of lunar rocks and soils returned by Apollo missions.

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Section: Introductionmentioning

confidence: 99%

Quantification of fluorescence emission from extraterrestrial materials and its significance for planetary Raman spectroscopy

Wang

Wei

Korotev

2019

J Raman Spectroscopy

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“…[27][28][29] Previously, its application for the study of silica gel-based stationary phase systems has been limited by the very weak Raman scattering of alkylsilane stationary phases and the large background scattering arising from the silica particles. Recent advances in instrumentation, such as the use of charge-coupled device detectors 30 and better rejection of background scattering, [31][32][33] have greatly improved the sensitivity of this technique, however. In this paper, we present the first demonstration of Raman spectroscopy for the characterization of commercially available, silica-based alkylsilane stationary phases.…”

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confidence: 99%

Characterization of Octadecylsilane Stationary Phases on Commercially Available Silica-Based Packing Materials by Raman Spectroscopy

Cai

Pemberton

1997

Anal. Chem.

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Two commercially available solid phase extraction packing materials containing octadecylsilane stationary phases, Isolute C18MF and Isolute C18, were characterized using Raman spectroscopy. Raman spectra of excellent quality can be obtained from such systems and provide direct information about the alkyl chain conformation in the stationary phase. Data from the ν(C-C) and ν(C-H) spectral regions suggest that the alkyl chains of these stationary phases exist in a highly disordered state which is very similar to that of the neat liquid.

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“…Detailed design considerations and a first-order analysis of a simple VPH grating were presented by Arns (19,20). The first spectrograph utilizing a VPH grating was initially described and discussed in a review article on the spectroscopic applications of volume holographic optics by Tedesco et al (21). The replacement of single surface reflective elements by complex refractive lenses allows for more compact and faster designs with significantly better imaging performance across large image fields.…”

Section: Volume Phase Gratings and Imaging Spectrographsmentioning

confidence: 99%

The Impact of Volume Phase Holographic Filters and Gratings on the Development of Raman Instrumentation

Owen

2007

J. Chem. Educ.

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Principles and Spectroscopic Applications of Volume Holographic Optics

Cited by 66 publications

References 16 publications

Quantification of fluorescence emission from extraterrestrial materials and its significance for planetary Raman spectroscopy

Quantification of fluorescence emission from extraterrestrial materials and its significance for planetary Raman spectroscopy

Characterization of Octadecylsilane Stationary Phases on Commercially Available Silica-Based Packing Materials by Raman Spectroscopy

The Impact of Volume Phase Holographic Filters and Gratings on the Development of Raman Instrumentation

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