Dr. Amit K. Lal Profile

Dr. Amit K. Lal

President at OMS Corp

SPIE Involvement:

Author

Area of Expertise:

Laser Doppler Vibrometers , Interferometry , Optical Systems , Vibration Analysis , Signal Processing , LabView

Websites:

Company Website

Publications (28)

Proceedings Article | 3 October 2022 Presentation + Paper

A new optical diagnostics tools for grading additive manufactured parts

James Trolinger, Jian Gao, Cecil Hess, Amit Lal

Proceedings Volume 12223, 122230J (2022) https://doi.org/10.1117/12.2633560

KEYWORDS: Composites, Additive manufacturing, Inspection, Finite element methods, Signal processing, Optics manufacturing, Optical diagnostics, Laser spectroscopy, Amplitude modulation, Nondestructive evaluation

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Proceedings Article | 1 August 2021 Presentation + Paper

Defect detection in additive manufactured products with a new photonics procedure: a case study

Amit Lal, Andrei Dioumaev, Dave Dimas, James Trolinger

Proceedings Volume 11817, 118170I (2021) https://doi.org/10.1117/12.2594993

KEYWORDS: Additive manufacturing, Photonics, Defect detection, Aluminum, Spectroscopy, Optical testing, Sensing systems

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Proceedings Article | 1 August 2021 Presentation + Paper

Determining material parameters with resonant acoustic spectroscopy

Andrei Dioumaev, Amit K. Lal, Dave Dimas, James Trolinger

Proceedings Volume 11817, 118170H (2021) https://doi.org/10.1117/12.2594940

KEYWORDS: Finite element methods, Acoustics, Spectroscopy, Additive manufacturing, Aluminum, Solids, Laser Doppler velocimetry, Optimization (mathematics), Vibrational characterization, Material characterization

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Proceedings Article | 22 April 2020 Presentation + Paper

Non-destructive evaluation of additively manufactured metal (AlSi10Mg) brackets using laser Doppler vibrometry and acoustical resonance spectroscopy

Dave Dimas, Amit Lal, Andrei Dioumaev, James Trolinger

Proceedings Volume 11380, 1138013 (2020) https://doi.org/10.1117/12.2558179

KEYWORDS: Additive manufacturing, Metals, Finite element methods, Manufacturing, Spectroscopy, Vibrometry, Nondestructive evaluation, Aerospace engineering, Inspection, Doppler effect

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Proceedings Article | 3 September 2019 Presentation + Paper

In-situ monitoring and quality control for in-space additive manufacturing using laser acoustical resonance spectroscopy

James Trolinger, Andrei Dioumaev, Amit Lal, Lorenzo Valdevit, Yunfei Zhang

Proceedings Volume 11102, 1110217 (2019) https://doi.org/10.1117/12.2529511

KEYWORDS: Laser Doppler velocimetry, 3D printing, Additive manufacturing, Finite element methods, Manufacturing

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Proceedings Article | 18 August 2018 Presentation + Paper

A non-destructive evaluation system for additive manufacturing based on acoustic signature analysis with laser Doppler vibrometry

James Trolinger, Amit Lal, Andrei Dioumaev, Dave Dimas

Proceedings Volume 10749, 107490C (2018) https://doi.org/10.1117/12.2320445

KEYWORDS: Manufacturing, Additive manufacturing, Laser Doppler velocimetry, Finite element methods, Doppler effect, Nondestructive evaluation, Vibrometry, Inspection, Acoustics, Printing

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SPIE Journal Paper | 26 February 2018

Pulsed spatial phase-shifting digital shearography based on a micropolarizer camera

Vyacheslav Aranchuk, Amit Lal, Cecil Hess, James Davis Trolinger, Eddie Scott

OE, Vol. 57, Issue 02, 024109, (February 2018) https://doi.org/10.1117/12.10.1117/1.OE.57.2.024109

KEYWORDS: Shearography, Cameras, Phase shifts, Polarization, Imaging systems, Pulsed laser operation, Charge-coupled devices, Interferometers, Sensors, Wavefronts

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Proceedings Article | 23 August 2017 Presentation + Paper

Authentication Sensing System Using Resonance Evaluation Spectroscopy (ASSURES)

James Trolinger, Andrei Dioumaev, Amit Lal, Dave Dimas

Proceedings Volume 10373, 103730D (2017) https://doi.org/10.1117/12.2274831

KEYWORDS: Manufacturing, Laser Doppler velocimetry, Doppler effect, Vibrometry, Finite element methods, Acoustics, Laser spectroscopy, Inspection

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Proceedings Article | 13 May 2011 Paper

Tip-based patterning of HOPG and CVD graphene

Bryan Hicks, Norimasa Yoshimizu, Christopher O' Connell, Amit Lal, Clifford Pollock

Proceedings Volume 8031, 803104 (2011) https://doi.org/10.1117/12.883277

KEYWORDS: Etching, Graphene, Electron beam lithography, Carbon, Chemical vapor deposition, Atomic force microscopy, Image processing, Scanning electron microscopy, Humidity, Oxidation

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Proceedings Article | 2 August 2010 Paper

An instrument for inspecting aspheric optical surfaces and components

Joshua Jo, James Trolinger, Amit Lal

Proceedings Volume 7791, 779106 (2010) https://doi.org/10.1117/12.862139

KEYWORDS: Spatial light modulators, Wavefronts, Inspection, Optical inspection, Aspheric lenses, Mirrors, Eye, Optical components, Optics manufacturing, Interferometers

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Proceedings Article | 28 April 2009 Paper

Instrumentation for characterizing a new class of optical domes

Amit Lal, Joshua Jo, Stephen Kupiec, Eddie Scott, James Trolinger

Proceedings Volume 7302, 73020P (2009) https://doi.org/10.1117/12.819228

KEYWORDS: Spatial light modulators, Wavefronts, Interferometers, Domes, Spherical lenses, Optical components, Glasses, Infrared radiation, Phase shifts, Phase measurement

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SPIE Journal Paper | 1 October 2006

Multi-beam laser Doppler vibrometer for landmine detection

Vyacheslav Aranchuk, Amit Lal, Cecil Hess, James Sabatier

OE, Vol. 45, Issue 10, 104302, (October 2006) https://doi.org/10.1117/12.10.1117/1.2358975

KEYWORDS: Land mines, Doppler effect, Mining, Image segmentation, Speckle, Spatial resolution, Laser Doppler velocimetry, Sensors, Signal processing, Photodetectors

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Proceedings Article | 18 May 2006 Paper

Speckle noise in a continuously scanning multibeam laser Doppler vibrometer for acoustic landmine detection

Vyacheslav Aranchuk, Amit Lal, Cecil Hess, James Sabatier, Richard Burgett, Ina Aranchuk, William Mayo

Proceedings Volume 6217, 621716 (2006) https://doi.org/10.1117/12.668783

KEYWORDS: Laser Doppler velocimetry, Speckle, Spiral phase plates, Signal to noise ratio, Doppler effect, Wavelets, Land mines, Interference (communication), Fermium, Frequency modulation

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Proceedings Article | 17 May 2006 Paper

Advanced LDV instruments for buried landmine detection

Amit Lal, Slava Aranchuk, Valentina Doushkina, Ernesto Hurtado, Cecil Hess, Jim Kilpatrick, Drew L'Esperance, Nan Luo, Vladimir Markov, Jim Sabatier, Eddie Scott

Proceedings Volume 6217, 621715 (2006) https://doi.org/10.1117/12.668927

KEYWORDS: Land mines, Laser Doppler velocimetry, Spatial resolution, Sensors, Doppler effect, Cameras, Interferometry, Phase shifts, Imaging systems, Photography

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Proceedings Article | 10 June 2005 Paper

Multi-beam laser Doppler vibrometry for acoustic landmine detection using airborne and mechanically coupled vibration

Vyacheslav Aranchuk, James Sabatier, Amit Lal, Cecil Hess, Richard Burgett, Michael O'Neill

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.603512

KEYWORDS: Doppler effect, Laser Doppler velocimetry, Land mines, Interference (communication), Image segmentation, Sensors, Acoustics, Vibrometry, Airborne laser technology, Photodetectors

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Proceedings Article | 10 June 2005 Paper

Whole-field digital vibrometer system for buried landmine detection

Amit Lal, Cecil Hess, Eddie Scott, Michael Dang, Robert Nichols

Proceedings Volume 5794, (2005) https://doi.org/10.1117/12.604048

KEYWORDS: Land mines, Speckle, Phase shifts, Wavefronts, Spatial resolution, Interferometry, Pulsed laser operation, Interferometers, Phase interferometry, Beam splitters

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Proceedings Article | 21 September 2004 Paper

Acoustic sensor for landmine detection using a continuously scanning multibeam LDV

Vyacheslav Aranchuk, Amit Lal, Hansheng Zhang, Cecil Hess, James Sabatier

Proceedings Volume 5415, (2004) https://doi.org/10.1117/12.541562

KEYWORDS: Laser Doppler velocimetry, Land mines, Mining, Sensors, Image segmentation, Mirrors, Acoustics, Velocity measurements, Photography, Diffractive optical elements

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Proceedings Article | 11 September 2003 Paper

Multiple-beam LDV system for buried landmine detection

Amit Lal, Hansheng Zhang, Vyacheslav Aranchuk, Ernesto Hurtado, Cecil Hess, Richard Burgett, James Sabatier

Proceedings Volume 5089, (2003) https://doi.org/10.1117/12.487154

KEYWORDS: Land mines, Mining, Laser Doppler velocimetry, Speckle, Clocks, Ferroelectric materials, Electronics, Sensors, Data acquisition, Diffractive optical elements

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Proceedings Article | 11 September 2003 Paper

Mobile mounted laser Doppler vibrometer array for acoustic landmine detection

Richard Burgett, Marshall Bradley, Michael Duncan, Jason Melton, Amit Lal, Vyacheslav Aranchuk, Cecil Hess, James Sabatier, Ning Xiang

Proceedings Volume 5089, (2003) https://doi.org/10.1117/12.487186

KEYWORDS: Laser Doppler velocimetry, Mining, Acoustics, Land mines, Doppler effect, Electronics, Head, Data acquisition, Control systems, Sensors

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Proceedings Article | 13 August 2002 Paper

Whole-field laser vibrometer for buried land mine detection

Amit Lal, Cecil Hess, Hansheng Zhang, Ernesto Hurtado, Vyacheslav Aranchuk, Vladimir Markov, William Mayo

Proceedings Volume 4742, (2002) https://doi.org/10.1117/12.479135

KEYWORDS: Land mines, Target detection, Magnesium, Doppler effect, Digital signal processing, Performance modeling, Computer simulations, Speckle

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Proceedings Article | 29 September 2000 Paper

Sharpened carbon nanotube probes

Katerina Moloni, Amit Lal, Max Lagally

Proceedings Volume 4098, (2000) https://doi.org/10.1117/12.401613

KEYWORDS: Carbon nanotubes, Atomic force microscopy, Silicon, Metrology, Scanning probe microscopy, Profiling, Near field scanning optical microscopy, Scanning electron microscopy, Quantum dots, Nanolithography

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Proceedings Article | 10 August 2000 Paper

Ultrasonic actuation for MEMS dormancy-related stiction reduction

Ville Kaajakari, Shyi-Herng Kan, Li-Jen Lin, Amit Lal, M. Steven Rodgers

Proceedings Volume 4180, (2000) https://doi.org/10.1117/12.395709

KEYWORDS: Ultrasonics, Ferroelectric materials, Humidity, Microelectromechanical systems, Silicon, Measurement devices, Reliability, Thin film coatings, Ceramics, Packaging

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Proceedings Article | 7 July 2000 Paper

Diffractively corrected Risley prism for infrared imaging

David Weber, James Trolinger, Robert Nichols, Amit Lal

Proceedings Volume 4025, (2000) https://doi.org/10.1117/12.391653

KEYWORDS: Scanners, Prisms, Staring arrays, Imaging systems, Missiles, Infrared imaging, Cameras, Mid-IR, Optical design, Diffraction gratings

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Proceedings Article | 3 September 1999 Paper

Impact testing of silicon-micromachined beams

Chung-Hoon Lee, Ville Kaajakari, Amit Lal

Proceedings Volume 3875, (1999) https://doi.org/10.1117/12.360482

KEYWORDS: Silicon, Semiconducting wafers, Etching, Low pressure chemical vapor deposition, Ultrasonics, Neck, Silica, Oxides, Photomasks, Anisotropic etching

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Proceedings Article | 2 September 1999 Paper

Miniature ultrasonic transducers with optical strain readout

Chung-Hoon Lee, Amit Lal

Proceedings Volume 3878, (1999) https://doi.org/10.1117/12.361266

KEYWORDS: Silicon, Ultrasonics, Diffraction gratings, Resonators, Actuators, Sensors, Motion measurement, Transducers, Ferroelectric materials, Diffraction

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Proceedings Article | 28 June 1999 Paper

Characterization of bacteriorhodopsin films for optical data storage and image processing

Vladimir Markov, Andreas Rohrbacher, Amit Lal, James Millerd, James Trolinger

Proceedings Volume 3793, (1999) https://doi.org/10.1117/12.351403

KEYWORDS: Holograms, Speckle, Diffraction, Light scattering, Spherical lenses, Optical correlators, Holography, Data storage, Multiplexing, Optical storage

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SPIE Journal Paper | 1 January 1999

Laser-diode-based joint transform correlator for fingerprint identification

Amit Lal, De Yu Zang, James Millerd

OE, Vol. 38, Issue 01, (January 1999) https://doi.org/10.1117/12.10.1117/1.602063

KEYWORDS: Optical correlators, Semiconductor lasers, Absorption, Joint transforms, Fourier transforms, Spatial frequencies, Computer simulations, Spatial filters, Optical filters, Beam splitters

Proceedings Article | 8 July 1993 Paper

Experimental demonstration of laser acceleration of electrons via relativistic plasma waves

Chris Clayton, Kenneth Marsh, A. Dyson, Matthew Everett, Amit Lal, Wim Leemans, Ronald Williams, Chand Joshi

Proceedings Volume 1860, (1993) https://doi.org/10.1117/12.147584

KEYWORDS: Electrons, Plasma, Clouds, X-rays, Sensors, Signal detection, Laser applications, Spectroscopy, Thomson scattering, Ionization

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Showing 5 of 28 publications

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