Polarization Uses in Lasergyros.
Purchase Print Copy
| Format | List Price | Price | |
|---|---|---|---|
| Add to Cart | Paperback15 pages | $20.00 | $16.00 20% Web Discount |
Lasergyros provide a compact and elegant approach to strapdown-type angular-rate measurements for navigation, but generally suffer from latch-up: the spurious tendency of two distinct outputs (frequencies whose arithmetic difference indicates the turning rate) to merge altogether at low rate levels. Remedial approaches involving (1) increased lasergyro area, (2) mechanical dithering, and (3) Faraday cell electro-optic dithering, generally introduce operational awkwardness and provide only partial success. The present study investigates a fourth remedy: abstracting two diverse phase-coordinated polarizations from the lasing medium and directing each along separate circulating paths. This investigation covers basic system design alternatives, including subsidiary feedback circuits. Preliminary analysis suggests system accuracies of the order of 10 billionths radian per second or less. 15 pp. (Author)
This report is part of the RAND Corporation Paper series. The paper was a product of the RAND Corporation from 1948 to 2003 that captured speeches, memorials, and derivative research, usually prepared on authors' own time and meant to be the scholarly or scientific contribution of individual authors to their professional fields. Papers were less formal than reports and did not require rigorous peer review.
This document and trademark(s) contained herein are protected by law. This representation of RAND intellectual property is provided for noncommercial use only. Unauthorized posting of this publication online is prohibited; linking directly to this product page is encouraged. Permission is required from RAND to reproduce, or reuse in another form, any of its research documents for commercial purposes. For information on reprint and reuse permissions, please visit www.rand.org/pubs/permissions.
The RAND Corporation is a nonprofit institution that helps improve policy and decisionmaking through research and analysis. RAND's publications do not necessarily reflect the opinions of its research clients and sponsors.