Search Results - "Aggarwal, Ishwar D."

Anti-reflective surface structures for spinel ceramics and fused silica windows, lenses and optical fibers by Busse, Lynda E., Florea, Catalin M., Frantz, Jesse A., Shaw, L. Brandon, Aggarwal, Ishwar D., Poutous, Menelaos K., Joshi, Rajendra, Sanghera, Jas S.

“…Anti-reflective surfaces structures (ARSS) have been successfully fabricated on fused silica windows, lenses and fibers, and spinel ceramics. The reflection…”
Get full text

Optical Filter Selection for High Confidence Discrimination of Strongly Overlapping Infrared Chemical Spectra by Major, Kevin J, Poutous, Menelaos K, Ewing, Kenneth J, Dunnill, Kevin F, Sanghera, Jasbinder S, Aggarwal, Ishwar D

“…Optical filter-based chemical sensing techniques provide a new avenue to develop low-cost infrared sensors. These methods utilize multiple infrared optical…”
Get full text

Degradation of Magnesium Aluminum Spinel by Lithium Fluoride Sintering Aid by Villalobos, Guillermo R., Sanghera, Jasbinder S., Aggarwal, Ishwar D.

“…The effect of LiF sintering aid on the degradation of transparent magnesium aluminate spinel during hot‐pressing was studied. LiF is used to etch spinel…”
Get full text

Maximizing the bandwidth of supercontinuum generation in As2Se3 chalcogenide fibers by Hu, Jonathan, Menyuk, Curtis R, Shaw, L Brandon, Sanghera, Jasbinder S, Aggarwal, Ishwar D

“…We describe in detail a procedure for maximizing the bandwidth of supercontinuum generation in As(2)Se(3) chalcogenide fibers and the physics behind this…”
Get full text

Highly efficient cascaded amplification using Pr(3+)-doped mid-infrared chalcogenide fiber amplifiers by Hu, Jonathan, Menyuk, Curtis R, Wei, Chengli, Brandon Shaw, L, Sanghera, Jasbinder S, Aggarwal, Ishwar D

“…We computationally investigate cascaded amplification in a three-level mid-infrared (IR) Pr(3+)-doped chalcogenide fiber amplifier. The overlap of the…”
Get more information

Infrared Transparent Germanate Glass-Ceramics by Bayya, Shyam S., Sanghera, Jasbinder S., Aggarwal, Ishwar D., Wojcik, Joshua A.

“…A new germanate glass‐ceramic material in the BaO‐Ga2O3‐GeO2 system is developed for infrared (IR) dome and window applications. This glass‐ceramic material…”
Get full text

Chemically Resolved Imaging of Biological Cells and Thin Films by Infrared Scanning Near-Field Optical Microscopy by Cricenti, Antonio, Generosi, Renato, Luce, Marco, Perfetti, Paolo, Margaritondo, Giorgio, Talley, David, Sanghera, Jas S., Aggarwal, Ishwar D., Tolk, Norman H., Congiu-Castellano, Agostina, Rizzo, Megan A., Piston, David W.

“…The infrared (IR) absorption of a biological system can potentially report on fundamentally important microchemical properties. For example, molecular IR…”
Get full text

Demonstration of a Human Color Vision Mimic in the Infrared by Major, Kevin J, Sanghera, Jasbinder S, Aggarwal, Ishwar D, Farrell, Mikella E, Holthoff, Ellen L, Pellegrino, Paul M, Ewing, Kenneth J

“…Color vision results from the interaction of retinal photopigments with reflected or transmitted visible light. The International Commission on Illumination…”
Get full text

Germanate glass as a window for high energy laser systems by Bayya, Shyam S, Chin, Geoffrey D, Sanghera, Jasbinder S, Aggarwal, Ishwar D

“…A modified Barium Gallo-Germanate glass has been developed as an exit window for high energy lasers operating in the mid-infrared wavelength region. All the…”
Get full text

Biomimetic Optical-Filter Detection System for Discrimination of Infrared Chemical Signatures by Major, Kevin J, Poutous, Menelaos K, Dunnill, Kevin F, Deguzman, Panfilo C, Sanghera, Jasbinder S, Aggarwal, Ishwar D, Ewing, Kenneth James

“…Optical-filter-based chemical sensors have the potential to dramatically alter the field of hazardous materials sensing. Such devices could be constructed…”
Get full text

Discrimination Between Explosive Materials and Isomers Using a Human Color Vision-Inspired Sensing Method by Major, Kevin J., Hutchens, Thomas C., Wilson, Christopher R., Poutous, Menelaos K., Aggarwal, Ishwar D., Sanghera, Jasbinder S., Ewing, Kenneth J.

“…This paper describes the application of a human color vision approach to infrared (IR) chemical sensing for the discrimination between multiple explosive…”
Get full text

Physical Properties of Chalcogenide and Chalcohalide Glasses by Nguyen, Vinh Q., Sanghera, Jas S., Aggarwal, Ishwar D., Lloyd, Isabel K.

“…The physical properties of glasses in the Ge30As10Se(60—x)Tex system with x= 25, 28, 30, and 35 at.% Te, the Ge30As10Se30Te(30—y)Iy system with y= 5, 10, 20,…”
Get full text

Nonlinear Properties of Chalcogenide Glass Fibers by Sanghera, Jas S., Shaw, Leslie B., Pureza, Paul, Nguyen, Vinh Q., Gibson, Dan, Busse, Lynda, Aggarwal, Ishwar D., Florea, Catalin M., Kung, Frederic H.

“…We demonstrate that the chalcogenide glasses possess large nonlinearities that can enable compact Raman amplifiers as well as fiber lasers and amplifiers in…”
Get full text

Maximizing the bandwidth of supercontinuum generation in As_2Se_3 chalcogenide fibers by Hu, Jonathan, Menyuk, Curtis R., Shaw, L. Brandon, Sanghera, Jasbinder S., Aggarwal, Ishwar D.

Get full text

Preparation and properties of BaS–Ga2S3–GeS2 glasses by Harbison, Barry B, Merzbacher, Celia I, Aggarwal, Ishwar D

Get full text

Fabrication of Arsenic Selenide Optical Fiber with Low Hydrogen Impurities by Nguyen, Vinh Q., Sanghera, Jas S., Pureza, Pablo, Kung, Frederic H., Aggarwal, Ishwar D.

“…Arsenic selenide glass optical fibers typically possess extrinsic absorption bands in the infrared wavelength region associated with residual hydrogen and…”
Get full text

Fabrication of Arsenic Sulfide Optical Fiber with Low Hydrogen Impurities by Nguyen, Vinh Q., Sanghera, Jas S., Cole, Brian, Pureza, Pablo, Kung, Frederic H., Aggarwal, Ishwar D.

“…Arsenic sulfide glass optical fibers typically possess extrinsic absorption bands in the infrared wavelength region associated with residual hydrogen and…”
Get full text

Development of chalcogenide glass fiber optics at NRL by Sanghera, Jas S, Aggarwal, Ishwar D

“…We have fabricated unclad sulphide and telluride chalcogenide fibers with losses of 0.047 dB/m at 2.4 μm and 0.11 dB/m at 6.6 μm, respectively. Core/clad…”
Get full text

Protective Silica Coatings on Zinc-Sulfide-Based Phosphor Particles by Villalobos, Guillermo R., Bayya, Shyam S., Sanghera, Jasbinder S., Miklos, Robert E., Kung, Frederic, Aggarwal, Ishwar D.

“…A spray drying approach was used to apply 15‐nm‐thick SiO2 continuous coatings onto ZnS:Ag phosphor particles. A prehydrolyzed TEOS dip coating formula was…”
Get full text

All-fiber chalcogenide-based mid-infrared supercontinuum source by Gattass, Rafael R., Brandon Shaw, L., Nguyen, V.Q., Pureza, P.C., Aggarwal, Ishwar D., Sanghera, Jasbinder S.

“…► An all-fiber mid-infrared supercontinuum source emitting over 1.9–4.8μm. ► The laser includes commercial off-the-shelf parts and a chalcogenide fiber. ►…”
Get full text