Keyword: Spectroscopy

Briefs: Photonics/Optics
The response of correlated oxides to strong electric fields and their dynamics is investigated using electrical transport measurements and electronic structure studies.
Briefs: Sensors/Data Acquisition

Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique that is widely applied in the characterization of large biomolecules using...

Briefs: Imaging

The concept of an imaging system that captures both spatial and spectral information has existed for a while. An example of one such imaging system that encodes both...

Briefs: Photonics/Optics

For applications in manufacturing, remote sensing, medicine, military, and fundamental science, an ideal laser would have high output power and a diffraction-limited beam....

Briefs: Photonics/Optics

In recent years, photoacoustic spectroscopy (PAS) has emerged as an attractive and powerful technique well suited for sensing applications. The development of high-power radiation sources and...

Briefs: Sensors/Data Acquisition

The purpose of this research program was to create and study novel luminescence particles (phosphors} capable of sensing and retaining the time-temperature information to which they were...

Briefs: Electronics & Computers
Enhancing the performance of GeSn p-i-n photodiodes using gold metal nanostructures.

The goal of this research project was to advance the science and technology...

Briefs: Materials

Epitaxial superconducting films of refractory metals are a promising new template for single crystal tunnel barriers in Josephson junction quantum bit (qubit) devices. In existing Josephson...

Briefs: Sensors/Data Acquisition

This work focused on developing novel nano-sized thermal sensors based on a multifunctional core/shell and nano-channel design that can be used to measure...

Articles: Defense

With the ever increasing threat of improvised explosive devices, both in the military arena and the civilian realm, there is a growing demand for technologies with the ability to detect...

Briefs: Test & Measurement

Suspicious powder incidents continue to be a disruptive and costly problem. In-situ assessment of suspicious powders within inorganic matrices, particularly with powders of...

Briefs: Physical Sciences

Molecules have internal motions that are characteristic of their structure and identity. These motions can be studied by spectroscopy in different regions of the...

Briefs: Manufacturing & Prototyping

The indirect nature of the fundamental energy gap in the elemental semiconductors Si and Ge prevents the use of these materials and their alloys in laser devices. The...

Briefs: Physical Sciences
Component Identification in Multi-Chemical Mixtures with Swept-Wavelength Resonant-Raman Spectroscopy

The utilization of ultraviolet resonance Raman spectroscopy for the detection and identification of chemical, biological, and nuclear hazards is of great interest due to the sensitivity and specificity afforded by this technique. Detection by...

Briefs: Physical Sciences

The supersonic combustion ramjet (scramjet) engine is one of the more promising high-speed flight propulsion technologies. One of the reasons for this is the simplicity of the engine design, having no...

Briefs: Photonics/Optics
Novel Wavelength Standards in the Near Infrared

The goal of this work was to develop a new class of portable optical frequency references based on sub-Doppler spectroscopy inside gas-filled, hollow-core photonic bandgap (PBG) optical fiber. The change in line width with core size, and narrower transitions inside a new “kagome” structured...

Briefs: Photonics/Optics
Solid-State, High-Energy Lasers Based on Rare-Earth Doped Gallium Nitride

Laser-based directed-energy weapons (DEW) are important components for future Army missile defense systems. The diode-pumped, rare-earth (RE)-doped, solid-state laser is a very promising path towards achieving a DEW-sufficient level of average power from a reasonably...

Briefs: Materials

This technique uses nanocluster assembly to produce model soft magnetic materials with simpler chemical composition than existing materials and well-controlled nanostructure,...

Briefs: Photonics/Optics
Continuous-Wave Laser Diodes Based on a Novel InGaAsNSb Material System

Laser sources operating in the spectral region from 2 to 3.5 μm are in demand for ultra-sensitive laser spectroscopy, medical diagnostics, home security, industrial process monitoring, infrared countermeasures, and optical wireless communications. Currently, solid-state...

Briefs: Materials

Electrically conductive, solventless nanoparticle liquids, consisting of gold nanoparticles chemically functionalized with large organic molecular groups, have been investigated for...

Briefs: Manufacturing & Prototyping

Progress has been reported in research oriented toward the goal of fabricating arrays of interconnected single-walled carbon nanotubes (SWNTs) that could serve as probes for measuring...

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