-Total power input on AOM - 1.3mW

-Use iris to block unshifted light - 250 uW

-Current AOM settings: 2W amplifier, 350 mVpp, 80 MHz - 20% efficient on first pass.

-74uW total power after PBS

-17uW blocking main beam with iris - ~23% efficient on second pass.

-optimized the quarter wave plate to maximize reflection back through the PBS. total power after PBS is 190 uW

-39uW blocking main beam with iris.

-Attempted to improve efficiency by increasing RF drive power. 600 mVpp RF drive now. This should be providing approximately a watt to the AOM now.

-1.5 mW total light

-600 uW blocking with iris to give 40% efficient first pass.

-585uW total on PBS reflection, 260 uW blocking with iris to get ~44% efficient with second pass.

-A tube based BS holder is probably the best bet to see the shape of the first pass and second pass beam simultaneously.