Zhou Mingyao, Hou Junfeng, Wang Dongguang, Deng Yuanyong. Design and Verification of Depolarized Derotator Alignment Scheme in Astronomical Telescope[J]. Chinese Journal of Lasers, 2020, 47(6): 604005
- Chinese Journal of Lasers
- Vol. 47, Issue 6, 604005 (2020)
Fig. 1. Diagram of depolarized derotator
Fig. 2. Optical path diagram of depolarized derotator alignment scheme
Fig. 3. Light pot trajectory with the rotation of optical axis around y-axis. (a) α3=α4=β3=β4=0; (b) α3=β3=10 arcsec, α4=β4=0; (c) α3=β3=0, α4=β4=10 arcsec
Fig. 4. Light pot trajectory with the rotation of M3 around x-axis and y-axis. (a) Rotation around x-axis; (b) rotation around y-axis
Fig. 5. Light pot trajectory with the rotation of M4 around x-axis and y-axis. (a) Rotation around x-axis; (b) rotation around y-axis
Fig. 6. Compensation effect when M3 and M4 rotate around y-axis
Fig. 7. Optical path diagram of alignment system in lab
Fig. 8. Principle prototype of depolarized derotator
Fig. 9. Parallel adjustment of normal of reference mirror and motor rotation axis. (a) Transmitted optical path; (b) reflected optical path
Fig. 10. Parallel adjustment of optical axis and motor rotation axis. (a) Transmitted optical path; (b) reflected optical path
Fig. 11. Concentric adjustment of optical axis and motor rotation axis.(a) Transmitted optical path; (b) reflected optical path
Fig. 12. Adjustment result of depolarized derotator
Fig. 13. Polarization test diagram of depolarized derotator
Fig. 14. Mueller matrix of depolarized derotator
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