Suppressing meta-holographic artifacts by laser coherence tuning.
Suppressing meta-holographic artifacts by laser coherence tuning.
复制标题
通过激光相干调谐抑制元全息伪影
DOI:
10.1038/s41377-021-00547-0
复制
发表时间:
2021-05-19
期刊:
影响因子:
--
通讯作者:
Cao H
中科院分区:
文献类型:
--
作者:
Eliezer Y;Qu G;Yang W;Wang Y;Yılmaz H;Xiao S;Song Q;Cao H
A metasurface hologram combines fine spatial resolution and large viewing angles with a planar form factor and compact size. However, it suffers coherent artifacts originating from electromagnetic cross-talk between closely packed meta-atoms and fabrication defects of nanoscale features. Here, we introduce an efficient method to suppress all artifacts by fine-tuning the spatial coherence of illumination. Our method is implemented with a degenerate cavity laser, which allows a precise and continuous tuning of the spatial coherence over a wide range, with little variation in the emission spectrum and total power. We find the optimal degree of spatial coherence to suppress the coherent artifacts of a meta-hologram while maintaining the image sharpness. This work paves the way to compact and dynamical holographic displays free of coherent defects. A special type of laser enables precise and continuous tuning of spatial coherence, suppressing the coherent artifacts (i) of a meta-hologram while maintaining image sharpness, emission spectrum and power (ii).
登录
查看更多内容
影响因子:
3.8
作者:
Golan, Lior;Shoham, Shy
通讯作者:
Shoham, Shy
影响因子:
3.6
作者:
FELDMAN, MR;GUEST, CC
通讯作者:
GUEST, CC
影响因子:
1.9
作者:
ARNAUD, JA
通讯作者:
ARNAUD, JA
影响因子:
10.8
作者:
Jiang, Jiaqi;Fan, Jonathan A.
通讯作者:
Fan, Jonathan A.
影响因子:
2.9
作者:
Chriki, Ronen;Mahler, Simon;Davidson, Nir
通讯作者:
Davidson, Nir