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8) After mounting the mirror make sure to get all of the dust out of the chamber and seal it up with an O-ring and lid. There is no need to screw the lid down now, as it will need to be removed when the chamber is mounted to the vertical breadboard.
The following procedures will need to be completed after the modules are mounted on the microscope breadboard, and after the beam is aligned through the remote focus assembly and roughly collimated afterwards
9) Since the beam should now be aligned with the remote focus objective aperture, and the remote focus mirror should be well aligned, the beam should exit the polarizing beamsplitter cube well-aligned with the axis of PupilRelay1 (not present). Check this by comparing the beam position with the PupilRelay1 v-block end mount, and the entrance aperture of the resonant mirror chamber. The resonant mirror should reflect a small portion of the beam onto the axis of PupilRelay2 (also not present). Check the reflected beam at the output aperture of the resonant mirror chamber, and at the v-block end mount of PupilRelay2. The resonant mirror position can be linearly adjusted using the stage to center the reflected beam on the chamber output aperture. Since the 12 kHz resonant mirror will only have a +/-2.5 deg range (mechanical), the reflected beam should deviates from the PupilRelay2 axis by significantly less than one degree. If the beam angle discrepancy is greater than this, then the angle of the resonant mirror can be adjusted in situ.
10) Using the two #8-32 threaded holes on the side of the chamber (these are RevA features that may need to be added–see top of this page), insert the proper hex key to loosen the screws that clamp the resonant mirror in its flexure mount. Reach into the resonant chamber and twist the resonant mirror main body until the exit beam is sufficiently parallel to the PupilRelay2 axis (<0.5 degree should be OK, as this is ~5% of the total scan range, but lower is better). The resonant mirror will simultaneously need to be kept at the right height in the mount, using the marks made before. The cord at the bottom of the resonant mirror will tend to pull at it, which adds some difficulty. It may be possible to tighten one of the flexure screws just enough to hold the mirror against the cord tension, but allow movement tweaks. Tighten the flexure screws when done, and add #8-32 screw "plugs" to the access holes.
11) Pupil relays 1 and 2 can now be added, by removing and replacing chamber assembly on vertical breadboard.
12) Blow dust out of chamber, and seal with cap and o-ring.