Ring-laser gyroscope without the lock-in phenomenon

Satoshi Sunada*, Shuichi Tamura, Keizo Inagaki, Takahisa Harayama

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


We theoretically and numerically study the effect of backscattering on rotating ring lasers by employing the Maxwell-Bloch equations. We show that frequency shifts due to the Sagnac effect incorporating the effect of backscattering can be observed without lock-in phenomenon, if the strength of backscattering originating in the bumps of the refractive index is larger than a certain value. It is also shown that the experimental results corresponding to the theoretical ones can actually be obtained by using a semiconductor fiber-optic ring laser gyroscope.

Original languageEnglish
Article number053822
JournalPhysical Review A - Atomic, Molecular, and Optical Physics
Issue number5
Publication statusPublished - 2008 Nov 19
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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