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Hyperspectrally Compressed Ultrafast Photography.
Physical Review Letters ( IF 8.1 ) Pub Date : 2020-01-17 , DOI: 10.1103/physrevlett.124.023902
Chengshuai Yang 1 , Fengyan Cao 1 , Dalong Qi 1 , Yilin He 1 , Pengpeng Ding 1 , Jiali Yao 1 , Tianqing Jia 1 , Zhenrong Sun 1 , Shian Zhang 1
Affiliation  

The spatial, temporal, and spectral information in optical imaging play a crucial role in exploring the unknown world and unencrypting natural mysteries. However, the existing optical imaging techniques can only acquire the spatiotemporal or spatiospectral information of the object with the single-shot method. Here, we develop a hyperspectrally compressed ultrafast photography (HCUP) that can simultaneously record the spatial, temporal, and spectral information of the object. In our HCUP, the spatial resolution is 1.26  lp/mm in the horizontal direction and 1.41  lp/mm in the vertical direction, the temporal frame interval is 2 ps, and the spectral frame interval is 1.72 nm. Moreover, HCUP operates with receive-only and single-shot modes, and therefore it overcomes the technical limitation of active illumination and can measure the nonrepetitive or irreversible transient events. Using our HCUP, we successfully measure the spatiotemporal-spatiospectral intensity evolution of the chirped picosecond laser pulse and the photoluminescence dynamics. This Letter extends the optical imaging from three- to four-dimensional information, which has an important scientific significance in both fundamental research and applied science.

中文翻译:

高光谱压缩的超快摄影。

光学成像中的空间,时间和光谱信息在探索未知世界和解密自然奥秘方面发挥着至关重要的作用。然而,现有的光学成像技术只能通过单次拍摄来获取物体的时空信息或时空光谱信息。在这里,我们开发了可以同时记录物体的空间,时间和光谱信息的高光谱压缩超快速摄影(HCUP)。在我们的HCUP中,水平方向的空间分辨率为1.26 lp / mm,垂直方向的空间分辨率为1.41 lp / mm,时间帧间隔为2 ps,光谱帧间隔为1.72 nm。此外,HCUP只能在仅接收和单发模式下运行,因此,它克服了主动照明的技术局限性,并且可以测量非重复或不可逆的瞬态事件。使用我们的HCUP,我们成功地测量了pic皮秒激光脉冲的时空-时空光谱强度演变和光致发光动力学。这封信将光学成像从三维信息扩展到了三维信息,这对基础研究和应用科学都具有重要的科学意义。
更新日期:2020-01-17
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