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Search Publications by: Jack A. Stone Jr. (Assoc)

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Displaying 51 - 64 of 64

Absolute Distance Interferometry with a 670-nm External Cavity Diode Laser

October 1, 1999
Author(s)
Jack A. Stone Jr., Alois Stejskal, Lowell P. Howard
Diode lasers are becoming increasingly important in length metrology. In particular, the tunability of diode lasers makes them attractive for applications such as absolute distance interferometry (ADI). In this paper we describe the current status of our

Absolute Interferometry With a 670 nm External Cavity Diode Laser

October 1, 1999
Author(s)
Jack A. Stone Jr., Alois Stejskal, Lowell P. Howard
In the last few years there has been much interest in the use of tunable diode lasers for absolute interferometry. Here we report on the use of an external cavity diode laser operating in the visible (λ{approximately} 670 nm) for absolute distance

Diode Lasers in Length Metrology: Application to Absolute Distance Interferometry

January 1, 1999
Author(s)
Jack A. Stone Jr., Lowell P. Howard, Alois Stejskal
Diode lasers are becoming increasingly important in length metrology. In particular, the tunability of diode lasers makes them attractive for applications such as absolute distance interferometry (ADI). In this paper we describe the current status of our

Sources of Error in Absolute Distance Interferometry

January 1, 1999
Author(s)
Jack A. Stone Jr., Alois Stejskal, Lowell P. Howard
In this paper we describe the status of our research on the use of diode lasers for absolute distance interferometry, and we discuss the major sources of uncertainty that limit the accuracy of this technique for distance measurement. We have primarily

Testing Displacement-Measuring Interferometer Systems

January 1, 1998
Author(s)
Jack A. Stone Jr., Martin Schroeck, Michael T. Stocker
We have made a study of one method for testing displacement-measuring interferometer systems, a modified back-to-back comparison, that automatically compensates for changes in the optical path length between the two interferometers. Although this method

A Differential Wavelength Meter for Laser Tuning

January 1, 1997
Author(s)
Lowell P. Howard, Jack A. Stone Jr.
A simple interferometer for matching the wavelengths of tunable lasers is described. Our interferometer uses the angular dispersion of a diffraction grating at the Littrow angle to produce a tilted wavefront with respect to a reference mirror in an

Benchmarking the Length Measurement Capabilities of the National Institute of Standards and Technology

January 1, 1997
Author(s)
Richard M. Silver, J Land, Jack A. Stone Jr., Ronald G. Dixson, Bryon S. Faust, James E. Potzick, Michael T. Postek, et al
A cross-section of measurements from the Precision Engineering Division within the National Institute of Standards and Technology is benchmarked against other leading National Measurement Institutes. We present a variety of length-related calibration

Fabry-Perot Interferometers for Small Displacement Measurements

January 1, 1996
Author(s)
Lowell P. Howard, Fredric Scire, Jack A. Stone Jr.
A description of a Fabry-Perot interferometer for measuring small displacements is given. The instruments consists of a fiber-optic-coupled actuator and mirror guiding mechanisms, a tunable diode laser for tracking the changes in cavity length and a

Novel Methods for Length Measurement Employing Diode Lasers

January 1, 1996
Author(s)
Jack A. Stone Jr., Lowell P. Howard, Alois Stejskal, M Stephens, C Oates, L Hollberg
Diode lasers have several unique capabilities for length-measurement applications, arising from properties of the diodes that are much different from those of the venerable helium-neon laser presently used for most interferometric measurements. For example

Wavelength-Shift Interferometry: Using a Dither to Improve Accuracy

January 1, 1996
Author(s)
Jack A. Stone Jr., Alois Stejskal, Lowell P. Howard
A dither in path length can dramatically improve the accuracy of wavelength-shift methods used for absolute distance interferometry. Here we report how a dither improves the accuracy of absolute distance measurement by two orders of magnitude, reducing

Frequency Stabilization of a Green He-Ne Laser

August 20, 1995
Author(s)
Jack A. Stone Jr., Alois Stejskal
A new process for stabilizing the frequency of commercially available 543 nm He-Ne lasers is described. The stabilization method is based on anomalous dispersion of the gain medium. A total of four green lasers have been stabilized - two at the National

Computer Modeling of Heterodyne Interferometer Errors

January 1, 1995
Author(s)
Lowell P. Howard, Jack A. Stone Jr.
A computer model and methodology for modeling optical mixing errors in heterodyne interferometers is presented. The model is based on the Jones calculus and uses a matrix formalism to eliminate simplifications and reduce assumptions in the model. The model