SIDE-BAND ANALYSIS AND SEISMIC DETECTION IN A LARGE RING LASER

被引：39

作者：

STEDMAN, GE ^{[1
]}

LI, Z ^{[1
]}

BILGER, HR ^{[1
]}

机构：

[1] OKLAHOMA STATE UNIV,SCH ELECT & COMP ENGN,STILLWATER,OK 74078

来源：

APPLIED OPTICS | 1995年 / 34卷 / 24期

关键词：

D O I：

10.1364/AO.34.005375

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A ring laser unlocked by the Earth's Sagnac effect has attained a frequency resolution of 1 part in 3 x 10(21) and a rotational resolution of 300 prad. We discuss both theoretically and experimentally the sideband structure of the Earth rotation-induced spectral line induced in the microhertz-hertz region by frequency modulation associated with extra mechanical motion, such as seismic events. The relative sideband height is an absolute measure of the rotational amplitude of that Fourier component. An initial analysis is given of the ring laser record from the Arthur's Pass-Coleridge seismic event of 18 June 1994.

引用

页码：5375 / 5385

页数：11

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