R&D (FilterCavity)
YuhangZhao - 14:23, Friday 19 January 2018 (632)
Comment to checking the infrared beam waist (Click here to view original report: 630)

Today I measured it again. Since the last measurement seems to be limited in a small region, I tried to expend the region this time. The result is shown here.

 

And now, we have four lenses on the infrared path. They are f500, f150, f175 and one without lable. Is this the same with previous situation?

Images attached to this comment
632_20180119062244_infraredfitting.png