Rotation Sensing Lasers in General Relativity: Some Technical Notes and Current Advances

被引：2

作者：

Schreiber, K. Ulrich ^{[1
,2
,3
]}

Gebauer, Andre ^{[1
]}

Kodet, Jan ^{[1
]}

Anyi, Caroline L. ^{[2
,3
]}

Wells, Jon-Paul R. ^{[2
,3
]}

机构：

[1] Tech Univ Muenchen, Forsch Einrichtung Satellitengeodaesie Geodaet Ob, D-93444 Bad Koetzting, Germany

[2] Univ Canterbury, Dodd Walls Ctr Photon & Quantum Technol, PB4800, Christchurch 8140, New Zealand

[3] Univ Canterbury, Sch Phys & Chem Sci, PB4800, Christchurch 8140, New Zealand

来源：

UNIVERSE | 2019年 / 5卷 / 09期

关键词：

Sagnac interferometry; ring laser gyroscopes; earth rotation sensing; RING LASER; GYRO;

D O I：

10.3390/universe5090190

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We review the current status of large ring laser gyroscopes having the potential to contribute to terrestrial measurements of general relativistic precessions. At this point in time, although these devices possess the raw sensitivity for such a measurement, they remain limited by long-term geometric instability, detection noise and imperfections in the physical models required to isolate geophysical effects. Furthermore, minute non-reciprocal biases provide a null-shift error and therefore no currently constructed laser system meets the requirement of absolute rotation rate sensing. Nevertheless, we are of the view that these are surmountable problems and the ability of ring laser gyroscopes to measure low frequency to DC signals has vastly increased in the last decade.

引用

页数：11