標題: The study of pixelated sampling and its influences on the 2nd-order spatial coherence measurement
作者: Li, Jie-En
Tien, Chung-Hao
光電工程學系
Department of Photonics
關鍵字: Spatial coherence;Statistical optics;Spatial light modulators;Pixelated device
公開日期: 15-九月-2018
摘要: Since the measurement of spatial coherence requires multiple sampling to acquire the complex coherence factor of a wavefield, it is convenient to accomplish such dynamic work by a non-redundant multi-slit through a programmable device such as spatial light modulator (SLM). In this study, we examined the influence of SLM-like pixelated structure, parameterized by whose fill factor, on both intensity distribution (first-order statistics) and complex coherence factor (second-order statistics). Based on the generalized Van Cittert-Zernike theorem that as the source satisfied the quasi-homogeneous condition, the coherence factor of the wavefield was irrelevant to the pixelated sampling structure. The inference was validated by a SLM-based experiment from a pseudothermal light source. We expected this work to be useful for future dynamic coherence measurement.
URI: http://dx.doi.org/10.1016/j.optcom.2018.03.081
http://hdl.handle.net/11536/145021
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2018.03.081
期刊: OPTICS COMMUNICATIONS
Volume: 423
起始頁: 86
結束頁: 90
顯示於類別:期刊論文