James D. Trolinger

MetroLaser (United States)

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Papers

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i-10 index

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Co-Authors

William K. Witherow

Marshall Space Flight Center

R.H. Rangel

University of California, Irvine

Cecil F. Hess

MetroLaser (United States)

James E. Millerd

4D Technology (United States)

Ravindra B. Lal

Salem State University

Vladimir B. Markov

Advanced Systems & Technologies (United States)

Carlos F.M. Coimbra

University of California, San Diego

Amit Lal

University of Illinois Chicago

David C. Weber

Intermountain Healthcare

Drew L’Espérance

Spectabit Optics (United States)

Cooperative Institutions

MetroLaser (United States)

University of California, Irvine

Marshall Space Flight Center

University of California, Berkeley

Alabama Agricultural and Mechanical University

Worcester Polytechnic Institute

Texas A&M University

University of Alabama

Bremen Institute for Applied Beam Technology

Irvine University

Author Statistics

Papers

Citation

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i-10 index

Research Field

A statistical analysis of a holographic system intended for the space shuttle

AIP conference proceedings (1980)

B. P. Hildebrand James D. Trolinger

This paper describes an analytical study to determine the stability requirements for a holographic system indended for the NASA space shuttle. The primary emphasis is on optimization of the holographic geometry to minimize the effect of film variations between hologram exposure in space, and wavefront reconstuction on the ground. It is shown that it is extremely important to use a balanced geometry (equal reference and object beam angles) and if possible, a specific oject beam angle.

Emphasis (telecommunications)

Reference beam

Holographic display

10.1063/1.32290

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Citations (0)

Particle Response to Low Reynolds Number Oscillation of a Fluid in Microgravity

42nd AIAA Aerospace Sciences Meeting and Exhibit (2004)

Drew L’Espérance James D. Trolinger R.H. Rangel Carlos F.M. Coimbra

This works presents an experimental study on the response of a particle to the movement of the fluid in which the particle is suspended. The stationary solution to Tchen's equation of motion was used to design experiments to determine the influence of the Basset history force. In the experiments, the stationary amplitude ratio and phase difference between the fluid and the particle motion are measured in a fluid cell containing a particle that is supported by a tether to counteract the effect of gravity. Particle and cell locations at the limits of motion are measured with great precision by applying electronic holography. The measured particle responses closely match the theoretical predictions for the full solution for a variety of fluid-to-particle density ratios, Reynolds numbers, and frequencies of oscillation. The experiments reinforce the importance of the Basset history term for moderate to high-frequency flows.

Oscillation (cell signaling)

Particle (ecology)

10.2514/6.2004-1147

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<title>Ultrahigh resolution interferometry</title>

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1996)

James D. Trolinger

Interferometry is widely used for precision measurement of optical pathlengths and pathlength changes. Because optical pathlength can then be related to other parameters like refractive index, density, temperature, position, angle, and constituency, interferometry forms the basis of many types of sensors. In recent years such procedures have evolved to extremes, where extremely high precision measurements are required. Measurement have been reported with better than 1/10,000 wavelength resolutions, i.e. better than one angstrom. This allows the real time observation of the evolution of events that were not possible before, essentially on a molecular level. New applications include: the observation of the growth of a crystal with near single atomic layer sensitivity, the observation of minute changes in concentration and temperature of a solution, sub- microscopic changes in bubbles and particles in a solution, surface mapping to nearly atomic precision, observation of trace levels of gases, and others. New procedures that have been developed and the problems that must be overcome to push the precision of interferometric measurement to its limits will be reviewed and some recent applications of these methods will be described. These include phase shifting, heterodyne, resonance, and phase conjugate interferometry.

10.1117/12.245157

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Citations (8)

Civil and structural engineering measurements with interferometry, shearography, and holography

Optics and Lasers in Engineering (1996)

James D. Trolinger

Shearography

Holographic interferometry

10.1016/0143-8166(95)00007-0

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Citations (3)

<title>Compact spaceflight solution crystal-growth system</title>

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1991)

James D. Trolinger Ravindra B. Lal Chandra S. Vikram William K. Witherow

By incorporating advanced technology in fiberoptics, diode lasers, and holographic optical elements with knowledge gained from previous Spacelab work, we have produced a design of a versatile, miniaturized, stand alone, crystal solution growth chamber. Diagnostics instrumentation include the following: (1) crystal growth rate monitor, (2) growth/dissolution monitor with feedback, (3) solution diagnostics, (4) multiple wavelength holography, (5) single wavelength or color Schlieren with video recording. Availability of such a chamber will allow for much greater access to microgravity than is provided by presently available crystal growth research cells.

Instrumentation

Crystal (programming language)

10.1117/12.49604

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Citations (1)

Development of a high-speed ballistic holography camera for field experiments

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (2004)

Donald R. Snyder David B. Watts Joseph E. Gordon James D. Trolinger David C. Weber

Air Force Research Laboratory and MetroLaser, Inc. researchers have completed the initial development and transition to operational use of portable field holography systems. This paper documents the first fully operational use of a novel and unique experimental capability for remote field holography. In this paper we document the field trials and initial experiments that were performed with the Remote Holographic Interferometry System (RHIS) at the Munitions Directorate, Air Force Research Laboratory Site at Eglin, AFB, Florida. These experiments were performed to assess the effectiveness of remote pulsed laser holography combined with high-speed videography to document the formation and propagation of plumes of materials created by impact of high-speed projectiles. This paper details the development of the experimental procedures and initial results of this new tool.

Videography

Holographic interferometry

10.1117/12.509625

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Citations (1)

New sandwich holographic interferometry techniques for flow diagnostics

38th Aerospace Sciences Meeting and Exhibit (1996)

James D. Trolinger Neal Brock

Some of the strongest candidates for quantitative flow diagnostics are based on holographic techniques. Recent advances in this field have further expanded the ability of holography to provide critical measurements in aero-optics, fluid mechanics, and combustion. In some of these categories, no other instrumentation candidate has been proven acceptable. The application. of holography to provide density in 3-D flows has become more practical with the advent of automated interferogram analysis. One of the most powerful methods in this category is double plate or sandwich, phase shifting, holographic interferometry. The paper describes new developments in sandwich holographic interferometry that lead to improved sensitivity and information content over previous systems. Specifically, the innovations include new phase shifting techniques, new aberration correction procedures and a method to examine the steady and unsteady flow field independently with the same hologram.

Holographic interferometry

Instrumentation

10.2514/6.1996-532

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Investigation of the Influence of Microgravity on Transport Mechanism in a Virtual Spaceflight Chamber: A Flight Definition Program

James D. Trolinger R.H. Rangel William K. Witherow J. R. Rogers Ravindra B. Lal

A need exists for understanding precisely how particles move and interact in a fluid in the absence of gravity. Such understanding is required, for example, for modeling and predicting crystal growth in space where crystals grow from solution around nucleation sites as well as for any study of particles or bubbles in liquids or in experiments where particles are used as tracers for mapping microconvection. We have produced an exact solution to the general equation of motion of particles at extremely low Reynolds number in microgravity that covers a wide range of interesting conditions. We have also developed diagnostic tools and experimental techniques to test the validity of the general equation . This program, which started in May, 1998, will produce the flight definition for an experiment in a microgravity environment of space to validate the theoretical model. We will design an experiment with the help of the theoretical model that is optimized for testing the model, measuring g, g-jitter, and other microgravity phenomena. This paper describes the goals, rational, and approach for the flight definition program. The first objective of this research is to understand the physics of particle interactions with fluids and other particles in low Reynolds number flows in microgravity. Secondary objectives are to (1) observe and quantify g-jitter effects and microconvection on particles in fluids, (2) validate an exact solution to the general equation of motion of a particle in a fluid, and (3) to characterize the ability of isolation tables to isolate experiments containing particle in liquids. The objectives will be achieved by recording a large number of holograms of particle fields in microgravity under controlled conditions, extracting the precise three-dimensional position of all of the particles as a function of time and examining the effects of all parameters on the motion of the particles. The feasibility for achieving these results has already been established in the ongoing ground-based NRA, which led to the virtual spaceflight chamber concept.

Particle (ecology)

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Growth and study of triglycine sulfate (TGS) crystals in low-G for infrared detector applications

R. B. Lal A. K. Batra M. D. Aggarwal William R. Wilcox James D. Trolinger

Experiments on growth of TGS crystals using (010) and (001) oriented disc shape seeds in the low gravity environment aboard Spacelab-3 are presented. The holographic interferograms reconstructed on the ground demonstrated diffusion limited growth. The morphology of the crystals grown was similar to that of crystals grown on earth, except the faces were not fully developed and planar. The device quality of these crytals is considered to be comparable with the best crystals grown on earth. Better infrared detector characteristics were obtained by doping TGS with Cs and L-alanine simultaneously on the ground. Crystals grown on (010) poled seeds show improved morphology and pyroelectric properties.

Triglycine sulfate

Morphology

Infrared detector

Source

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Citations (2)

Particle And Flow Field Holography A Critical Survey

Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE (1985)

James D. Trolinger

A brief background is provided for the fields of particle and flow visualization holography. A summary of methods currently in use is given, followed by a discussion of more recent and unique applications. The problem of data reduction is discussed. A state of the art summary is then provided with a prognosis of the future of the field. Particle and flow visualization holography are characterized as powerful tools currently in wide use and with significant untapped potential.

Particle (ecology)

10.1117/12.946522

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Citations (7)