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Full-color holographic image capture: Cholesteric liquid crystal circular polarizer combined with geometric phase lens reduces noise in self-interference incoherent digital holography
- Authors
- Jin-Hyeok Seo, Jae-Won Lee, Jung-Yeop Shin, Min-Seok Kim, Young-Min Cho, Hyeon-Su Jeong, Erkhembaatar Dashdavaa, Kihong Choi, Keehoon Hong, Hak-Rin Kim
- Issue Date
- 2025-05
- Citation
- Journal of the Society for Information Display, v.33, no.5, pp.553-565
- ISSN
- 1071-0922
- Publisher
- John Wiley & Sons
- Language
- English
- Type
- Journal Article
- Abstract
- We reduced image noise in broadband full-color holographic image capture in a compact self-interference incoherent digital holography (SIDH) system by combining a cholesteric liquid crystal (CLC) circular polarizer with a quarter-waveplate-based geometric phase lens (QW-GPL). To address chromatic wavefront noise issues commonly found in conventional half-waveplate-based SIDH systems, we explore a SIDH system incorporating a quarter-waveplate-based GPL (QW-GPL). In particular, we resolve angular polarization-dependent noise in QW-GPL wavefront modulation by utilizing circularly polarized Bragg reflection of CLC as a circular polarization filter. This approach ensures an ideal circularly polarized beam state across a wide range of incident angles and wavelengths. By effectively mitigating circular polarization distortion in QW-GPL, our method significantly improves the quality of reconstructed holographic images in full-color SIDH with a compact form factor, as demonstrated by reduced entropy values.
- KSP Keywords
- Bragg reflection, Circularly polarized beam, Form factor, Full-color, Image capture, Image noise, Liquid crystals(LCs), Polarization distortion, Polarization filter, Self-interference, Wavefront modulation
This work is distributed under the term of Creative Commons License (CCL)
(CC BY)
(CC BY)
