Mitsuhashi, Shalika,
We installed the new cavity mirrors and the demodulate part.
• install the new cavity mirrors
The new cavity mirrors' ROC is the same as the previous one(ROC=50mm)
• install the demodulate part
We install the preamplifier(SR560 made by Stanford Reserch System), the local osillator(AFG1062 made by Tektronix), and the mixer(ZAD-1-1+ made by Mini-circuits) to demodulate the beam.
The setup of the local oscillator's phase was 85°.
The setup of the preamplifiler was as follows(The picture was attached).
filter cutoffs[Hz] | 300 |
low pass [dB/oct] | 6 |
gain mode | low noise |
gain | ×500 |