Pengbo, Simon

The measurement on the P-pol input birefringence in TAMA#1 is finished. Please refer to the attached pictures.

As can be seen (again compared with the results of the former measurement, see elog entry 1807) we could decrease the number and epecially the strength of the disturbing vertical stripes. Of course, they are still present but note that the inhomogeneity level is quite low. Therefore, also weak remnants of polarization instabilities are easily visible.