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- Scan Amplitude = 2V (or 4V if a differential input is employed). This corresponds approximately to field-of-view scanned using Scan Amplitude = 2.5V (or 5V with differential input) under ScanImage 3.0/3.5.
- For this particular galvo, measured Acquisition Delay = 100?s (Scan Delay = 200?s). These values were entered and held fixed -- i.e. the linear optimization regime was employed. This Scan Delay value is well above small-angle step response specification; a better tuned scanner/servo would likely perform better.
At the specified fill fractions, the temperature remained below 50°C during 1 hour of continuous scanning. The temperature had remained stable for at least 5-10 minutes at that point.
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Bidirectional Scanning
| 1x | 2x | 3x | 4x | 5x | |
|---|---|---|---|---|---|---|
0.5 ms/line |
| NONE (0.640) | NONE (0.640) | 0.787706 |
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|
1 ms/line | 0.819 |
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|
| |
2 ms/line | 0.819 |
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NOTE: Values above 0.819 were not tested.
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- Temperature measured using Fluke 179 multimeter using Fluke 80BK-A temperature probe (Type-K thermocouple)
- Galvo was mounted on a standard aluminum mounting block (available from Cambridge Technology) which in turn was placed on a stainless steel shelf in a well-ventilated room/area
- Probe was fixed to exposed side of galvo can, towards the mirror, using thermal compound
- Baseline temperature for tests was ?24.5°C
- Optimal fill fraction fulfilling 'linear' condition was determined by eye – - i.e. it was judged that ripple had sufficiently settled by the desired ramp start position