title: Practical Considerations on the Multi-layer Mirrors for Superluminal Ring Laser Gyroscopes.
abstract: We have created a simple model to analyze the restrictions on superluminal ring laser gyroscopes arising from the absorption of coating materials. For a ring laser gyroscope with a cavity length of 15 cm, the scale factor enhancement is nearly impossible due to absorption from the high dispersion mirror. In order to obtain a practical superluminal ring laser gyroscope, the extinction coefficient of coating materials should be less than 1E-10, which is a challenge at present.
authors.affiliation: 1] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [2] Interdisciplinary Center of Quantum Information, National University of Defense Technology, Changsha 410073, China [3] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Wang
authors.affiliation: 1] College of Opto-Electronic Science and Engineering, National University of Defense Technology, Changsha 410073, China [2] Interdisciplinary Center of Quantum Information, National University of Defense Technology, Changsha 410073, China.
authors.forename: Baolun
authors.initials: B
authors.lastname: Yuan