Acta Optica Sinica, Volume. 24, Issue 3, 378(2004)
The Design of Tunable Phase-Only Pupil Filter with Uniaxial Crystal
Pupil filter is an important optical superresolution element. In fabrication, phase-only pupil filter is more difficult than amplitude-only pupil filter. Diffraction optics can be used to fabricate the phase-only pupil filter, but this pupil filter cannot be tunable. The application of liquid crystal in phase-only pupil filter makes the fabrication easy. But the large decrease of intensity and the limited phase changed depth complicate its use in phase-only pupil filter. A new way to fabricate the phase-only pupil filter with uniaxial crystal is put forward. This phase-only pupil filter can be easily used in application. And there is no distinct decrease of light intensity. By numerical calculation, the feasibility of this design is demonstrated.
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[in Chinese], [in Chinese], [in Chinese]. The Design of Tunable Phase-Only Pupil Filter with Uniaxial Crystal[J]. Acta Optica Sinica, 2004, 24(3): 378