A question was raised as to what the beam profiles of the two lasers were (M126N-1064-100 and M126N-1064-500).

Spec sheet says that their output beam profile sould nomninally be (W_v,W_h) = (380,500) um at 5 cm from the laser head.

Tara measured this for the 100 mW laser and found to be (W_v,W_h) = (155,201) at 3.45 cm and 2.8 cm from the opening respectivly. (see: https://nodus.ligo.caltech.edu:8081/CTN/120)

When the 500 mW NPRO was aquired a note was made that the beam profile would be measured (see: https://nodus.ligo.caltech.edu:8081/CTN/934) Looking a month around these dates I can't find a measurment.

In principle the beam specs for both lasers should be similar but it doesn't appear we have a measurment. Maybe something for me to do in the next few days.

- awade Tue May 31 09:32:58 2016

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Also first post, hi.