Dr. Alfred D. Ducharme Profile

Dr. Alfred D. Ducharme

CTO at Hoverfly Technologies, Inc.

SPIE Involvement:

Author | Instructor

Area of Expertise:

MTF , Laser Speckle , Solid-State Lighting , Optical Systems Testing

Dr. Alfred D. Ducharme is an Assistant Professor of Engineering Technology and the College of Optics and Photonics at the University of Central Florida. He is currently the Assistant Dean of Distance and Distributed Learning for the College of Engineering and Computer Science. He is also the Program Coordinator for the BSEET – Photonics program instituted in 2003. His research interests include solid-state lighting, image system testing, and laser speckle. Dr. Ducharme earned his B.S. in electrical engineering from the University of Massachusetts, Lowell and a Ph.D. in electrical engineering from the University of Central Florida (CREOL). Dr. Ducharme was awarded the Rudolf Kingslake award from SPIE in 1995 and has 19 US Patents.

SPIE Journal Paper | 1 September 2008

Improved aperture for modulation transfer function measurement of detector arrays beyond the Nyquist frequency

Alfred Ducharme, Sarah Temple

OE, Vol. 47, Issue 09, 093601, (September 2008) https://doi.org/10.1117/12.10.1117/1.2976798

KEYWORDS: Modulation transfer functions, Detector arrays, Speckle, Spatial frequencies, Charge-coupled devices, Imaging systems, Cameras, Sensors, Distance measurement, Speckle pattern

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Proceedings Article | 29 August 2008 Paper

Recent advances in the modulation transfer function testing of detector arrays

Alfred Ducharme

Proceedings Volume 7060, 70600U (2008) https://doi.org/10.1117/12.792520

KEYWORDS: Modulation transfer functions, Detector arrays, Speckle, Spatial frequencies, Charge-coupled devices, Sensors, Imaging systems, Speckle pattern, Distance measurement, Cameras

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Proceedings Article | 5 December 2001 Paper

Network control architecture for solid-state lighting

Alfred Ducharme, Fritz Morgan

Proceedings Volume 4445, (2001) https://doi.org/10.1117/12.450036

KEYWORDS: Light emitting diodes, Light sources and illumination, Solid state lighting, Prototyping, Network architectures, Control systems, Analog electronics, Power supplies, Sensors, Manufacturing

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Proceedings Article | 3 February 1999 Paper

Remote electrically passive position transducer

Alfred Ducharme, Constantine Markos, R. Rieder, Geert Wijntjes

Proceedings Volume 3541, (1999) https://doi.org/10.1117/12.339087

KEYWORDS: Transducers, Sensors, Actuators, Modulation, Phase measurement, Signal detection, Fiber optics, Electromagnetic coupling, Fiber optics sensors, Distance measurement

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Proceedings Article | 11 August 1998 Paper

Phase-based optical metrology system for helmet tracking

Alfred Ducharme, Peter Baum, Geert Wijntjes, Orr Shepherd, Constantine Markos

Proceedings Volume 3362, (1998) https://doi.org/10.1117/12.317435

KEYWORDS: Transmitters, Receivers, Modulation, Semiconductor lasers, Optical tracking, Sensors, Head, Optical metrology, Magnetic sensors, Magnetism

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Proceedings Article | 20 April 1998 Paper

Precision closed-loop control of optical beam steering

Alfred Ducharme, Geert Wijntjes, Constantine Markos, Glenn Boreman

Proceedings Volume 3292, (1998) https://doi.org/10.1117/12.305499

KEYWORDS: Liquid crystals, Phased array optics, Phase measurement, Modulators, Beam steering, Antennas, Sensors, Phase shifts, Microwave radiation, Feedback loops

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SPIE Journal Paper | 1 August 1995

Holographic elements for modulation transfer function testing of detector arrays

Alfred Ducharme, Glenn Boreman

OE, Vol. 34, Issue 08, (August 1995) https://doi.org/10.1117/12.10.1117/12.207144

KEYWORDS: Holography, Modulation transfer functions, Detector arrays, Speckle, Integrating spheres

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SPIE Journal Paper | 1 March 1995

Random transparency targets for modulation transfer function measurement in the visible and infrared regions

Arnold Daniels, Glenn Boreman, Alfred Ducharme, Eyal Sapir

OE, Vol. 34, Issue 03, (March 1995) https://doi.org/10.1117/12.10.1117/12.190433

KEYWORDS: Modulation transfer functions, Transparency, Spatial frequencies, Infrared radiation, Visible radiation, Imaging systems, Staring arrays, Sensors, Solids, Cameras

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Proceedings Article | 31 August 1993 Paper

Point-spread function and MTF characterization of the kinetic-kill-vehicle hardware-in-the-loop simulation (KHILS) infrared-laser scene projector

Terri Alexander, Glenn Boreman, Alfred Ducharme, Ronald Rapp

Proceedings Volume 1969, (1993) https://doi.org/10.1117/12.154720

KEYWORDS: Point spread functions, Modulation transfer functions, Modulation, Sensors, Projection systems, Infrared radiation, Collimators, Bragg cells, Laser scattering, Fourier transforms

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Proceedings Article | 31 August 1993 Paper

Random targets for modulation transfer function testing

Arnold Daniels, Glenn Boreman, Alfred Ducharme, Eyal Sapir

Proceedings Volume 1969, (1993) https://doi.org/10.1117/12.154714

KEYWORDS: Modulation transfer functions, Spatial frequencies, Staring arrays, Phase measurement, Sensors, Image resolution, Phase shift keying, Charge-coupled devices, Signal to noise ratio, Target detection

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Proceedings Article | 31 August 1993 Paper

Effects of intensity thresholding on the power spectrum of laser speckle

Alfred Ducharme, Glenn Boreman, Donald Snyder

Proceedings Volume 1969, (1993) https://doi.org/10.1117/12.154734

KEYWORDS: Speckle, Modulation transfer functions, Speckle pattern, Monte Carlo methods, Sensors, Optical simulations, Laser damage threshold, Solids, Optical filters, Distortion

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SPIE Journal Paper | 1 February 1993

Modulation transfer function testing of detector arrays using narrow-band laser speckle

Martin Sensiper, Glenn Boreman, Alfred Ducharme, Donald Snyder

OE, Vol. 32, Issue 02, (February 1993) https://doi.org/10.1117/12.10.1117/12.60851

KEYWORDS: Modulation transfer functions, Speckle, Staring arrays, Spatial frequencies, Detector arrays, Imaging systems, Sensors, Integrating spheres, Speckle pattern, Solids

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Proceedings Article | 12 August 1992 Paper

Use of narrowband laser speckle for MTF characterization of CCDs

Martin Sensiper, Glenn Boreman, Alfred Ducharme, Donald Snyder

Proceedings Volume 1683, (1992) https://doi.org/10.1117/12.137767

KEYWORDS: Modulation transfer functions, Speckle, Cameras, Imaging systems, Detector arrays, Spatial frequencies, Fourier transforms, Distance measurement, Charge-coupled devices, Target detection

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Showing 5 of 13 publications

Course Instructor

SC156: Basic Optics for Engineers

This course introduces each of the following basic areas of optics, from an engineering point of view: geometrical optics, image quality, flux transfer, sources, detectors, and lasers. Basic calculations and concepts are emphasized.

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SC157: MTF in Optical and Electro-Optical Systems

Modulation transfer function (MTF) is used to specify the image quality achieved by an imaging system. It is useful in analysis of situations where several independent subsystems are combined. This course provides a background in the application of MTF techniques to performance specification, estimation and characterization of optical and electro-optical systems.

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