Here, we can keep track of key measures from our two-photon microscope systems, in order to monitor for problems and understand the past history of the microscopes:
| date | berg | power at sample at 100% (milli Watts) | Extinction ratio (power out of Pockel cell at 100% / power in at 0%) | Pockel cell holding voltage | Alignment assessment | |
|---|---|---|---|---|---|---|
| 04/27/2022 | III | 115 | 537 (537/1) | -0.52 | Workable. Re-alignment needed at low priority | |
| 12/16/2022 | IV | 117 | -0.29 | Quick alignment starting at the periscope because power at sample was 70mW | ||
| 1/26/2023 | IV | ~150 | ~800 (goes up to 1000) | -0.31 | Much improved beam shape and power! Full realignment starting at the laser aperture, trhough half wave plate, P cell and allignment inside the scope. Fixed scanimage calibration issues to improved read out extinction ratio. | Will add picture later, pretty circular |