&lt;title&gt;Fiber optic IR reflectance sensor for the cone penetrometer&lt;/title&gt;

Nau, G.; Bucholtz, F.; Ewing, Kenneth J.; Vohra, S. T.; Sanghera, Jasbinder S.; Aggarwal, Ishwar D.

doi:10.1117/12.224110

Cited by 14 publications

(10 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Naval Research Laboratory later patented a similar idea for contaminated soil analysis using a chalcogenide glass fiber optic probe to carry out remote mid‐infrared spectroscopy based on diffuse reflectance of the remote sample . However, no broad‐band reflectance mid‐infrared spectra of soil appear to have been reported . Instead, near‐infrared remote reflectance spectra of soil were reported using a silica‐glass fiber optic probe.…”

Section: Current Use Of Chalcogenide Optical Fibers For Remote Sensingmentioning

confidence: 99%

A Prospective for New Mid‐Infrared Medical Endoscopy Using Chalcogenide Glasses

Seddon¹

2011

Int J of Appl Glass Sci

136

View full text Add to dashboard Cite

That chalcogenide glasses potentially provide a solution for mid‐infrared medical endoscopy is discussed in detail for the first time. It is shown that chalcogenide glass fiber optics could underpin new mid‐infrared medical endoscopic systems for real‐time molecular sensing, imaging, and analysis of tissue and for fiber laser surgery at new mid‐infrared wavelengths. Moreover, chalcogenide glass fiber optic and waveguide devices and systems could provide the key to new mid‐infrared communications for molecular sensing to inform decision‐taking in other sectors as diverse as manufacturing, energy, the environment, and security. The development and deployment of chalcogenide glasses for mid‐infrared photonics over the next decade or so could mirror the complexity and versatility of silica fiber optics developed in the 20th century for near‐infrared photonics. These ideas are developed in this article and the current status of chalcogenide glass photonics is briefly surveyed.

show abstract

Section: Current Use Of Chalcogenide Optical Fibers For Remote Sensingmentioning

confidence: 99%

A Prospective for New Mid‐Infrared Medical Endoscopy Using Chalcogenide Glasses

Seddon¹

2011

Int J of Appl Glass Sci

136

View full text Add to dashboard Cite

show abstract

“…Cooper and Malone (1992) and Grey et al (1993) presented penetrometer probes for in situ detection of hydrocarbon contaminants by spectral means. These types of apparatus have been further developed by several working groups: Bucholtz et al (1998) and Nau et al (1995), who presented a system to detect contaminants by infrared spectroscopy; Liebermann (1998), who applied a laser-induced fluorescence (LIF) system for in situ detection of soil contamination with cone penetrometer technology, capable for collecting fluorescence fingerprints of chemical contaminants (e.g., St. Germain et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Technique, analysis routines, and application of direct push-driven in situ color logging

et al. 2016

View full text Add to dashboard Cite

Color data are a useful proxy for soil/sediment parameterization since they reflect material characteristics. We introduce direct push color logging for real-time and depth-resolved, in situ colorimetric record of colors in unconsolidated sediments in terrestrial environments. Until now, no routines exist on how to handle highly resolved (mmscale) data. To develop such routine, we transform colorimetric data (CIEXYZ) into color surrogates of selected color. We obtain interpretable color logs over depth by filtering with Haar and Daublet4 wavelet functions. We verify the approach, according to repeatability of in situ sediment color measurements, with related lithological determination gathered by state-of-the-art direct push-based cone penetration testing and soil sampling data. The developed routine is appropriate for unambiguous transformation of color data into interpretable color surrogates and filtering small-scale variability. We observe that soil color logs are repeatable and proved to correlate with lithological/chemical changes. Thus, the technique allows enhanced profiling by means of providing a reproducible high-resolution parameter for analysis of soil/ sediment characteristics. This opens potential new areas of application and new outputs for in situ-obtained colorimetric data in and beyond geotechnical site characterization.

show abstract

“…Infrared-transmitting chalcogenide optical fibers are being used for many applications [1][2][3][4][5][6][7] in the infrared (1-13 jtm) from laser power delivery (CO at 5.4 tm and CO2 at 10.6 rim) as well as in fiber optic chemical sensor systems using absorption, evanescent, and diffuse reflectance spectroscopy for environmental and facility clean up [3][4][5][6]. These applications are made possible through our in-house development and fabrication of stable low-loss arsenic sulfide based fiber (As4OS(6O)Se) and tellurium-containing fiber (Ge30As105e30Te30) with minimum loss of 0.1 dB/m [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of As-S and As-Se optical fiber with low hydrogen impurities using tellurium tetrachloride (TeC1 4 )

et al. 2003

Self Cite

View full text Add to dashboard Cite

Arsenic sulfide (As-S) and arsenic selenide (As-Se) glass optical fibers typically possess extrinsic absorption bands in the infrared wavelength region associated with residual hydrogen and oxygen related impurities, despite using purified precursors. We report a purification process based on the addition of 0. 1 wt% tellurium tetrachioride (TeCl4) to the glass. During melting, the chlorine from TeCl4 reacts with the hydrogen impurities to produce volatile products (e.g. HC1) that can be removed by subsequent dynamic distillation. The processing conditions have been modified accordingly to give low H-S (1.5 dB/m) and low H-Se (0.2 dB/m) impurity content.

show abstract

<title>Fiber optic IR reflectance sensor for the cone penetrometer</title>

Cited by 14 publications

References 0 publications

A Prospective for New Mid‐Infrared Medical Endoscopy Using Chalcogenide Glasses

A Prospective for New Mid‐Infrared Medical Endoscopy Using Chalcogenide Glasses

Technique, analysis routines, and application of direct push-driven in situ color logging

Fabrication of As-S and As-Se optical fiber with low hydrogen impurities using tellurium tetrachloride (TeC1 4 )

Contact Info

Product

Resources

About