Quality improvement of unfiltered holography by optimizing high diffraction orders with fill factor.
Opt Lett
; 49(18): 5043-5046, 2024 Sep 15.
Article
en En
| MEDLINE
| ID: mdl-39270225
ABSTRACT
Computer-generated holography (CGH) suffers from high diffraction orders (HDOs) due to the pixelated nature of spatial light modulators (SLMs), typically requiring bulky optical filtering systems. To address this issue, a novel unfiltered holography approach known as the high-order gradient descent (HOGD) algorithm was previously introduced to optimize HDOs without optical filtering, enabling compact holographic displays. However, this algorithm overlooks a crucial physical parameter of SLMs-the fill factor-leading to limited optical quality. Here, we introduce a fill factor-based HOGD (FF-HOGD) algorithm, specifically designed to improve the quality of unfiltered holography by incorporating the fill factor into the optimization process. The quality advantage of FF-HOGD is demonstrated through numerical simulations and optical experiments.
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01-internacional
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MEDLINE
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En
Revista:
Opt Lett
Año:
2024
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Article