Oscillations, Waves, and Interactions - GWDG

284 Schreiber
Figure 3. The G ring laser during an upgrade of the vacuum system at the Geodetic
Observatory Wettzell in 2006.
Figure 4. Illustration of the heterogeneously constructed UG2 gyroscope. Many small
concrete foundations on the floor of the Cashmere cave support the ring laser structure.
does also not require Zerodur for the interferometer body. The application of ring
lasers to seismology is covered in more detail in Sect. 7.
In order to summarize the basic performance of all important large rings, Table 1
lists all relevant quantities from these instruments. Apart from area and perimeter,
the key figures for the scaling factor, the table also lists the obtained Sagnac splitting
of the optical frequency as well as the best short-term sensor resolution obtained
from these devices. It should be noted that all rings are orientated horizontally on