Danny, TVo, Dan B

We temporarily placed a 800nm bandpass filter infront of the ITMX HWS to block out the 1064 beam. The new HWS image attached shows no sign of the 1064 fringes we saw previously in 45022 at 20W. This filter has a lot of defects so we will order a better one to replace it. It should suffice for testing until then.

Second image shows the HWS output for a lock after installing the filter. Third is from a lock on Sunday. ITMX HWS is behaving much more now when both the PRC gain and power increase.