Angular-polarization multiplexing with spatial light modulators for resolution enhancement in digital holographic microscopy

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题名:	Angular-polarization multiplexing with spatial light modulators for resolution enhancement in digital holographic microscopy
作者:	Lai, XJ (Lai, Xin-Ji) Cheng, CJ (Cheng, Chau-Jern) Lin, YC (Lin, Yu-Chih) Tu, HY (Tu, Han-Yen)
贡献者:	電機系
关键词:	digital holography resolution spatial light modulators multiplexing
日期:	2017-05
上传时间:	2017-04-28 13:12:50 (UTC+8)
摘要:	This work presents an angular and polarization multiplexing technique for synthetic aperture (SA) imaging in digital holographic microscopy by using a pair of phase-type spatial light modulators (SLMs) to achieve resolution enhancement through a single hologram acquisition. Angular multiplexing is applied to adjust the incident wave propagation at different specific deflection angles by modulating a SLM panel as a binary phase grating. The other SLM panel is introduced to control the polarization of the propagating object beams and thus ensure orthogonal polarization between these waves to avoid mutual interference of the conjugated first-order diffracting beams derived from the same phase grating. Experimental results indicate that the spatial resolution and signal-to-noise ratio of the reconstructed image are efficiently improved. Furthermore, an electrically addressed SLM pair creates the possibility to perform a dynamic and precise manipulation for realizing angularpolarization multiplexing SA imaging without the use of mechanical scanning mirrors.
關聯:	JOURNAL OF OPTICS 卷: 19 期: 5 文獻號碼: 055607
显示于类别:	[電機工程系] 期刊論文

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