March 12, 2022
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At 808 nm:
| angle (degrees) | Rp | Rs |
|---|---|---|
| 0 | 0.041365 | 0.041365 |
| 5 | 0.040948 | 0.041784 |
| 10 | 0.039693 | 0.043069 |
| 15 | 0.037593 | 0.045301 |
| 20 | 0.034640 | 0.048630 |
If angle of incidence is 10 degrees, reflected beam rotates by 20 degrees. If beam of diameter D rotates by theta, distance it must travel to not have incident and reflected overlap obeys tan(theta)=D/L so L/D=1/tan(theta)
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| Description | Qty | Part # | Details | Purchase Date |
|---|---|---|---|---|
| Pitch and Yaw Tilt Platform with Thumbscrew Drives | 8 | APY001 | 01/30/24 | |
| Ø2" UVFS Wedged Window, Uncoated | 8 | WW42012 | 01/30/24 | |
| 60 mm Cage Cube | 8 | LC6WR | 01/30/24 | |
| Light-Tight Blank Cover Plate for 60 mm Cage Cube, 1/4"-20 Tap | 10 | LB1C | 01/30/24 | |
| SM2-Threaded Cover Plate for 60 mm Cage Cube | 4 | LB2C | 01/30/24 | |
| Kinematic Prism Platform for 60 mm Cage Cube, Imperial Taps | 6 | LB4C | 01/30/24 | |
| 60-mm-Cage-Compatible Rectangular Filter Mount | 2 | LFFM1 | 01/30/24 | |
| Ø2" Optic Mount for 60 mm Cage Cube with Setscrew Optic Retention | 8 | LB5C1 | 01/30/24 | |
| 60 mm Kinematic Cage Cube Connector | 8 | DFM2-CC | 01/30/24 | |
| order blocking filter, controller servo | ||||
| optical shutter? Thorlabs | ||||
| optical chopper following monochromator | ||||
| condensing lens for photodiode | ||||
We note the reflective designs in this paper which document a 4-element system that adequately* preserves the initial polarization / phase of light.
Kane To-Do:
polarization state output as fxn of angle of incidence for BK-7 and Fused Silica ... quantitative calcns
sol'n: circular polarization?
python script to compute aggregate throughput
incidence / reflection angle tables / program
(Galvez, E. (2001). Achromatic polarization-preserving beam displacer. Optics Letters, 26(13), 971–973. https://doi.org/10.1364/OL.26.000971)
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