Dr. Aniruddha Weling Profile

Dr. Aniruddha Weling

Senior Engineer at QinetiQ North America

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Publications (7)

SPIE Journal Paper | 6 October 2016

Raman analyzer for sensitive natural gas composition analysis

Rachit Sharma, Samhitha Poonacha, Anish Bekal, Sameer Vartak, Aniruddha Weling, Vinayak Tilak, Chayan Mitra

OE, Vol. 55, Issue 10, 104103, (October 2016) https://doi.org/10.1117/12.10.1117/1.OE.55.10.104103

KEYWORDS: Raman spectroscopy, Gases, Calibration, Spectroscopy, Carbon monoxide, Raman scattering, Mirrors, Optical engineering, Signal analysis, Methane

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Proceedings Article | 4 May 2010 Paper

Skin depth effects in wavelength-selective infrared microbolometers based on lossy frequency selective surfaces

Joo-Yun Jung, Jong Yeon Park, Dean Neikirk, Aniruddha Weling, Will Haffer, James Goldie, Paul Wilson

Proceedings Volume 7660, 766018 (2010) https://doi.org/10.1117/12.850393

KEYWORDS: Skin, Absorption, Metals, Resistance, Long wavelength infrared, Copper, Microbolometers, Infrared radiation, Aluminum, Chromium

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Proceedings Article | 4 May 2010 Paper

Fabrication of wavelength selective germanium dielectric supported microbolometers

Jong Yeon Park, Joo-Yun Jung, Dean Neikirk, Aniruddha Weling, William Hafer, James Goldie, Paul Wilson

Proceedings Volume 7660, 76601C (2010) https://doi.org/10.1117/12.850456

KEYWORDS: Germanium, Dielectrics, Microbolometers, FT-IR spectroscopy, Oxygen, Decision support systems, Plasma, Resistance, Etching, Silicon

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Proceedings Article | 14 May 2007 Paper

Wavelength-selective infrared detectors based on patterned resistive sheets

Joo-Yun Jung, Sangwook Han, Dean Neikirk, Aniruddha Weling, James Goldie, Paul Willson

Proceedings Volume 6542, 65421G (2007) https://doi.org/10.1117/12.719731

KEYWORDS: Microbolometers, Absorption, Resistance, Infrared detectors, Long wavelength infrared, Infrared radiation, Mirrors, Metals, Antennas, Terahertz radiation

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Proceedings Article | 17 May 2006 Paper

Antenna-coupled microbolometers for multispectral infrared imaging

Aniruddha Weling, Patrick Henning, Dean Neikirk, Sangwook Han

Proceedings Volume 6206, 62061F (2006) https://doi.org/10.1117/12.665791

KEYWORDS: Sensors, Microbolometers, Infrared imaging, Absorption, Infrared sensors, Staring arrays, Mirrors, Long wavelength infrared, Thermography, Infrared detectors

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Proceedings Article | 8 March 2004 Paper

Waveguide infrared spectrometer platform for point and standoff chemical sensing

Suneet Chadha, Pat Henning, Frank Landers, Ani Weling

Proceedings Volume 5269, (2004) https://doi.org/10.1117/12.519426

KEYWORDS: Spectroscopy, Infrared spectroscopy, Waveguides, Biological and chemical sensing, Infrared sensors, Infrared radiation, FT-IR spectroscopy, Sensors, Thermography, Integrated optics

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Advanced autonomous detection of chemical warfare agents and toxic industrial chemicals has long been a major military concern. At present, our capability to rapidly assess the immediate environment is severely limited and our domestic infrastructure is burdened by the meticulous procedures required to rule out false threats. While significant advances have recently been accomplished in remote spectral sensing using rugged FTIRs and point detectors, efforts towards low cost chemical discrimination have been lacking. Foster-Miller has developed a unique waveguide spectrometer which is a paradigm shift from the conventional FTIR approach. The spectrometer provides spectral discrimination over the 3-14 μm range and will be the spectrometer platform for both active and passive detection. Foster-Miller has leveraged its innovations in infrared fiber-optic probes and the recent development of a waveguide spectrometer to build a novel infrared sensor platform for both point and stand-off chemical sensing. A monolithic wedge-grating optic provides the spectral dispersion with low cost thermopile point or array detectors picking off the diffracted wavelengths from the optic. The integrated optic provides spectral discrimination between 3-12 μm with resolution at 16 cm^-1 or better and overall optical throughput approaching 35%. The device has a fixed cylindrical grating bonded to the edge of a ZnSe conditioning “wedge”. The conditioning optic overcomes limitations of concave gratings as it accepts high angle (large FOV) light at the narrow end of the wedge and progressively conditions it to be near normal to the grating. On return, the diffracted wavelengths are concentrated on the discrete or array detector (pixel) elements by the wedge, providing throughput comparable to that of an FTIR. The waveguide spectrometer coupled to ATR probes, flow through liquid cells or multipass gas cells provides significant cost advantage over conventional sampling methodologies. We will present the enabling innovations along with present performance, sensitivity expectations and discrimination algorithm strategy.

Proceedings Article | 15 August 2003 Paper

Handheld chemical threat monitor for the soldier system

Suneet Chadha, Patrick Henning, Ani Weling, Franklin Landers, Alan Samuels

Proceedings Volume 5085, (2003) https://doi.org/10.1117/12.488670

KEYWORDS: Sensors, Spectroscopy, Liquids, FT-IR spectroscopy, Infrared radiation, Mid-IR, Absorption, Infrared sensors, Infrared detectors, Infrared spectroscopy

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Showing 5 of 7 publications

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