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Proceedings Paper

Laser metrology evolution: past, present, and future
Author(s): Nils H. Abramson
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Paper Abstract

There is no doubt that the laser has in many ways far surpassed even the wildest ideas of what it could do. Our most important unit, the meter, is practically defined as a certain number of lightwaves, and now with the use of the laser interferometer we measure with the light waves directly in the workshop. The laser has also made possible a new definition of the meter -- the distance that light travels in a certain fraction of a second. Thus, time and space have become connected in a way I am sure Einstein should have appreciated. With the laser we can produce ultrashort pulses made up of only a few waves. And with these pulses we can make measurements down to micrometers. Soon, even this new definition of the meter can be used directly in the workshops.

Paper Details

Date Published: 17 February 1995
PDF: 7 pages
Proc. SPIE 2333, Fifth International Symposium on Display Holography, (17 February 1995); doi: 10.1117/12.201906
Show Author Affiliations
Nils H. Abramson, Royal Institute of Technology (Sweden)

Published in SPIE Proceedings Vol. 2333:
Fifth International Symposium on Display Holography
Tung H. Jeong, Editor(s)

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