You searched on: Author: jack stone jr
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51. Novel Methods for Length Measurement Employing Diode Lasers
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 e ...
52. Wavelength-Shift Interferometry: Using a Dither to Improve Accuracy
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, reduci ...
53. Frequency Stabilization of a Green He-Ne Laser
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 Natio ...
54. Computer Modeling of Heterodyne Interferometer Errors
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 ...