Both the pump (532nm) and fundamental (1064nm) have now been alignment to the VOPO cavity based on the mode matching setup described in this log.
From the mirror specification (C2500221), the theoretical escape efficiency is calculated to be 98.5% (derived from the decay rate of the mirror, k_in,r / k_in,tot).
The escape efficiency from the VOPO reflection is 97.9% (calculated from the photodiode reflection, trans/refl = (2nesc - 1)^2).
In short, input alignment done, rear seed injection is the next to go, escape efficiency checked, and the photons escaping the cavity with the enthusiasm of a PhD student during a conference lunch break.
For the escape efficiency measurement, the transmission field refer to the light entering and exiting the cavity via M1 (shown as the "dip" on the reflection photodiode). Whereas the reflected field refer to the promptly reflected light from the photodiode (shown at the flat line on the reflection photodiode).
The measured escape efficiency is consisted with the measurement done at MIT (E2500270), where escape efficiency of 97.9% to 98.2% was reported for various crystal position.