Dr. Amin N. Dharamsi Profile

Dr. Amin N. Dharamsi

Professor at Old Dominion Univ

SPIE Involvement:

Author

Publications (16)

Proceedings Article | 26 May 2011 Paper

Simultaneous ultrahigh harmonic detection wavelength modulation spectroscopy for resolving congested spectra

Brett M. Sawyer, Karan Mohan, A. Dharamsi

Proceedings Volume 8024, 80240C (2011) https://doi.org/10.1117/12.884037

KEYWORDS: Modulation, Absorption, Oxygen, Spectroscopy, Vertical cavity surface emitting lasers, Optical amplifiers, Atmospheric optics, Signal detection, Data acquisition, Signal to noise ratio

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Proceedings Article | 1 May 2009 Paper

A quantitative measure for information content in antenna array radiation patterns

Karan Mohan, M. Amir Khan, Amin Dharamsi

Proceedings Volume 7310, 73100C (2009) https://doi.org/10.1117/12.818574

KEYWORDS: Sensors, Antennas, Chemical species, Photons, Absorption, Phased arrays, Phase measurement, Remote sensing, Molecules, Infrared sensors

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Proceedings Article | 7 February 2009 Paper

Signal structure and sensitive detection of molecular species: optimal experimental techniques in modulation broadened wavelength modulation spectroscopy

M. Amir Khan, Karan Mohan, A. Dharamsi

Proceedings Volume 7229, 72290P (2009) https://doi.org/10.1117/12.808525

KEYWORDS: Modulation, Signal to noise ratio, Signal detection, Absorption, Spectroscopy, Interference (communication), Information theory, Sensors, Molecules, Amplifiers

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Proceedings Article | 25 October 2006 Paper

Novel pathlength saturation effects in modulation spectroscopic techniques

M. Khan, K. Mohan, A. Dharamsi

Proceedings Volume 6378, 63780C (2006) https://doi.org/10.1117/12.685642

KEYWORDS: Modulation, Absorption, Spectroscopy, Signal detection, Photodetectors, Sensors, Demodulation, Visible radiation, Absorption spectroscopy, Signal processing

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Proceedings Article | 17 October 2006 Paper

Thermodynamics of information loss in spectroscopic measurements

K. Mohan, M. Khan, A. Dharamsi

Proceedings Volume 6377, 63770Q (2006) https://doi.org/10.1117/12.685219

KEYWORDS: Photons, Spectroscopy, Sensors, Photodetectors, Thermodynamics, Absorption, Phonons, Emission spectroscopy, Gases, Diffraction gratings

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Proceedings Article | 1 September 2006 Paper

Minimum harmonic detection order for Rayleigh resolution in modulation spectroscopy

Karan Mohan, Mohammad Khan, Amin Dharamsi

Proceedings Volume 6299, 62990P (2006) https://doi.org/10.1117/12.679522

KEYWORDS: Modulation, Absorption, Spectroscopy, Signal detection, Frequency modulation, Neodymium, Absorption spectroscopy, Phase shift keying, Gases, Amplitude modulation

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Proceedings Article | 17 November 2005 Paper

Optimization of nano-photonic sensors and detectors by information theoretic principles

Karan Mohan, Mohammad Khan, Amin Dharamsi

Proceedings Volume 6008, 60081J (2005) https://doi.org/10.1117/12.629792

KEYWORDS: Sensors, Antennas, Spatial resolution, Chemical elements, Absorption, Solids, Photodetectors, Photonic nanostructures, Nanophotonics, Phased arrays

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Proceedings Article | 16 June 2004 Paper

Quantitative metrics of efficacy of higher harmonic detection in wavelength modulation spectroscopy for precision measurements

Mohammad Khan, Amin Dharamsi

Proceedings Volume 5364, (2004) https://doi.org/10.1117/12.529103

KEYWORDS: Signal detection, Photodetectors, Modulation, Error analysis, Data modeling, Spectroscopy, Precision measurement, Statistical analysis, Absorption, Interference (communication)

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Proceedings Article | 28 March 2002 Paper

Sensitive detection of molecular species by modulation techniques: a measure of information content in spectroscopy

M. Khan, James Barrington, Amin Dharamsi

Proceedings Volume 4634, (2002) https://doi.org/10.1117/12.463826

KEYWORDS: Modulation, Spectroscopy, Absorption, Distortion, Signal detection, Molecules, Sensors, Information theory, Frequency modulation, Thermodynamics

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Proceedings Article | 17 May 2001 Paper

Sensitive nonintrusive sensing by modulation spectroscopy with diode lasers

Audra Bullock, James Barrington, Amin Dharamsi

Proceedings Volume 4285, (2001) https://doi.org/10.1117/12.426899

KEYWORDS: Signal detection, Absorption, Modulation, Semiconductor lasers, Distortion, Oxygen, Spectroscopy, Frequency modulation, Signal to noise ratio, Fermium

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SPIE Journal Paper | 1 April 2001

Frequency stabilization of a diode laser to absorption lines of water vapor in the 944-nm wavelength region

Grady Koch, Anthony Cook, Colleen Fitzgerald, Amin Dharamsi

OE, Vol. 40, Issue 04, (April 2001) https://doi.org/10.1117/12.10.1117/1.1354628

KEYWORDS: Absorption, Laser stabilization, Semiconductor lasers, Modulation, LIDAR, Pulsed laser operation, Ferroelectric materials, Mirrors, Analog electronics, Fiber lasers

Proceedings Article | 19 May 2000 Paper

Applications of wavelet transforms in biomedical optoacoustics

Zibiao Wei, Shujun Yang, Amin Dharamsi, Barbara Hargrave

Proceedings Volume 3916, (2000) https://doi.org/10.1117/12.386328

KEYWORDS: Wavelets, Tissues, Wavelet transforms, Discrete wavelet transforms, Denoising, Interference (communication), Biomedical optics, Signal processing, Absorption, Fourier transforms

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Proceedings Article | 29 March 2000 Paper

Wavelength modulation of semiconductor lasers for absorption spectroscopy employing harmonic detection

Audra Bullock, James Barrington, Colleen Fitzgerald, Brian Seavey, Amin Dharamsi

Proceedings Volume 3945, (2000) https://doi.org/10.1117/12.380529

KEYWORDS: Modulation, Signal detection, Spectroscopy, Semiconductor lasers, Amplitude modulation, Absorption, Frequency modulation, Laser spectroscopy, Absorption spectroscopy, Phase shift keying

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Proceedings Article | 29 March 2000 Paper

Wavelength modulation spectroscopy of water vapor and line center stabilization at 1.462 um for lidar applications

Colleen Fitzgerald, Grady Koch, Audra Bullock, Amin Dharamsi

Proceedings Volume 3945, (2000) https://doi.org/10.1117/12.380525

KEYWORDS: Modulation, Absorption, Laser stabilization, LIDAR, Semiconductor lasers, Spectroscopy, Signal detection, Pulsed laser operation, Ferroelectric materials, Feedback control

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Proceedings Article | 27 May 1998 Paper

Sensitive absorption-line characterization and Fabry-Perot fringing reduction in modulation spectroscopy

Amin Dharamsi, Audra Bullock, Patrick Shea

Proceedings Volume 3265, (1998) https://doi.org/10.1117/12.308670

KEYWORDS: Modulation, Absorption, Fabry–Perot interferometers, Signal to noise ratio, Signal detection, Interference (communication), Spectroscopy, Optical components, Semiconductor lasers, Reflectivity

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Proceedings Article | 10 January 1997 Paper

Modulation spectroscopy with diode lasers: applications in spectroscopy and nonintrusive measurements

Amin Dharamsi, Audra Bullock

Proceedings Volume 3000, (1997) https://doi.org/10.1117/12.263483

KEYWORDS: Modulation, Signal detection, Absorption, Spectroscopy, Laser spectroscopy, Semiconductor lasers, Temperature metrology, Phase shift keying, Doppler effect, Amplitude modulation

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Showing 5 of 16 publications

Conference Committee Involvement (1)

Photonics: Design, Technology, and Packaging

10 December 2003 | Perth, Australia

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