Open AccessMirrors movement-induced equivalent rotation effect in ring laser gyros
Author(s) -
Guangfeng Lu,
Zhenfang Fan,
Shaomin Hu,
Hui Luo
Publication year - 2013
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.21.014458
Subject(s) - rotation (mathematics) , optics , physics , ring laser gyroscope , ring laser , laser , sagnac effect , path (computing) , loop (graph theory) , constant (computer programming) , ring (chemistry) , optical path , interferometry , geometry , mathematics , computer science , chemistry , organic chemistry , combinatorics , programming language
In this letter, the relationship between the change of the closed-loop optical path and the movement of two adjacent spherical mirrors in ring laser gyros is investigated by matrix optical approach. When one spherical mirror is pushed forward and the other is pulled backward to maintain the total length of the closed-loop optical path constant, an equivalent rotation of the closed-loop optical path is found for the first time. Both numerical simulations and experimental results show the equivalent rotation rate is proportional to the velocities of the mirrors' movement.