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PAS signals, 1σ noise levels and signal-to-noise ratios (SNRs) measured for I-QTF (at the fundamental and first overtone mode) and T-QTF, when piezoelectric or interferometric readouts are selected.
| Frequency (kHz) |
Piezoelectric readout |
Interferometric readout |
|||||
|---|---|---|---|---|---|---|---|
| Signal (mV) |
Noise (mV) |
SNR | Signal (μV) |
Noise (μV) |
SNR | ||
| I-QTF fund mode |
3.44 | 0.55 | 0.024 | 23 | 490 | 14.0 | 35 |
| T-QTF | 12.45 | 30.15 | 0.36 | 84 | 230 | 3.8 | 60 |
| I-QTF overt mode |
21.40 | 18.0 | 0.35 | 51 | 97 | 2.5 | 39 |
