Hyperspectrally Compressed Ultrafast Photography

Yang, Chengshuai; Cao, Fengyan; Qi, Dalong; He, Yilin; Ding, Pengpeng; Yao, Jinzhong; Jia, Tianqing; Sun, Zhenrong; Zhang, Shian

doi:10.1103/physrevlett.124.023902

Cited by 38 publications

(16 citation statements)

References 23 publications

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“…In our previous work, the related technical parameters of HCUP have been characterized. 18 The spatial resolutions in the x and y directions are, respectively, 0.39 and 0.35 mm with an 8.8 mm × 6.3 mm field of view (FOV), corresponding to 1.26 and 1.41 line pairs per millimeter (lp/mm) in our previous report. The temporal frame interval is 2 ps, and the spectral frame interval is 1.72 nm.…”

Section: Sv-cup's Depth Resolution Characterizationmentioning

confidence: 92%

“…The two optical signals are encoded with a static pseudorandom binary pattern on the DMD and then retroreflected through the same 4f imaging system. The two encoded optical signals are divided into two components by another beam splitter (BS2) again, one goes into an HCUP subsystem, 18 and the other enters a ToF-CUP subsystem. 21 In ToF-CUP, the laserinduced optical signal is filtered by a bandpass filter, and only the backscattered optical signal is sent into a streak camera SC1 (XIOPM, 5200).…”

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

“…1(b), the original 5D dynamic scene Iðx; y; z; t; λÞ, involving spatial 3D, temporal 1D, and spectral 1D information, is first encoded and then divided into two components for imaging: ToF-CUP is used to capture the spatial 3D ðx; y; zÞ information 21 and HCUP is used to record the spatial-temporalspectral 4D ðx; y; t; λÞ information. 18 In ToF-CUP, the backscattered optical signal is sheared in the temporal domain. According to the time of received photons t ToF and the intensity reflectivity αðx; y; zÞ of the 3D object, the backscattered optical signal I 1 ðx; y; zÞ can be described as I 1 ðx; y; zÞ ¼ I s αðx; y; zÞ;…”

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

“…To recover the spatial 3D information, i.e.,Î 1 ðx; y; zÞ, an augmented Lagrangian (AL) algorithm based on compressed sensing is employed to solve the minimization problem, 18…”

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

“…However, the ultrafast imaging techniques, such as compressed ultrafast photography (CUP), [12][13][14][15] sequentially timed all-optical mapping photography, 16 and single-shot femtosecond time-resolved optical polarimetry, 17 could record the spatial-temporal three-dimensional (3D) ðx; y; tÞ information, while both the depth (i.e., z) and spectral information were missing. Some improved techniques have been developed to further extend the imaging dimensions of CUP, such as hyperspectrally compressed ultrafast photography (HCUP) 18 and compressed ultrafast spectral photography, 19 which could capture the spatial-temporal-spectral (4D) ðx; y; t; λÞ information, but they still lacked the depth information. Recently, a stereo-polarimetric compressed ultrafast photography method was able to detect spatial-temporal-polarization five-dimensional (5D) ðx; y; z; t; ψÞ information.…”

Section: Introductionmentioning

confidence: 99%

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Single-shot spectral-volumetric compressed ultrafast photography

Ding

Yao

et al. 2021

Adv. Photon.

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In ultrafast optical imaging, it is critical to obtain the spatial structure, temporal evolution, and spectral composition of the object with snapshots in order to better observe and understand unrepeatable or irreversible dynamic scenes. However, so far, there are no ultrafast optical imaging techniques that can simultaneously capture the spatial-temporal-spectral five-dimensional (5D) information of dynamic scenes. To break the limitation of the existing techniques in imaging dimensions, we develop a spectral-volumetric compressed ultrafast photography (SV-CUP) technique. In our SV-CUP, the spatial resolutions in the x , y and z directions are, respectively, 0.39, 0.35, and 3 mm with an 8.8 mm × 6.3 mm field of view, the temporal frame interval is 2 ps, and the spectral frame interval is 1.72 nm. To demonstrate the excellent performance of our SV-CUP in spatial-temporal-spectral 5D imaging, we successfully measure the spectrally resolved photoluminescent dynamics of a 3D mannequin coated with CdSe quantum dots. Our SV-CUP brings unprecedented detection capabilities to dynamic scenes, which has important application prospects in fundamental research and applied science.

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Section: Sv-cup's Depth Resolution Characterizationmentioning

confidence: 92%

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

“…To recover the spatial 3D information, i.e.,Î 1 ðx; y; zÞ, an augmented Lagrangian (AL) algorithm based on compressed sensing is employed to solve the minimization problem, 18…”

Section: Sv-cup's Configuration and Principlementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Single-shot spectral-volumetric compressed ultrafast photography

Ding

Yao

et al. 2021

Adv. Photon.

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Discrete Illumination‐Based Compressed Ultrafast Photography for High‐Fidelity Dynamic Imaging

Yao,

Guo,

et al. 2024

Advanced Science

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Compressed ultrafast photography (CUP) can capture irreversible or difficult‐to‐repeat dynamic scenes at the imaging speed of more than one billion frames per second, which is obtained by compressive sensing‐based image reconstruction from a compressed 2D image through the discretization of detector pixels. However, an excessively high data compression ratio in CUP severely degrades the image reconstruction quality, thereby restricting its ability to observe ultrafast dynamic scenes with complex spatial structures. To address this issue, a discrete illumination‐based CUP (DI‐CUP) with high fidelity is reported. In DI‐CUP, the dynamic scenes are loaded into an ultrashort laser pulse train with controllable sub‐pulse number and time interval, thus the data compression ratio, as well as the overlap between adjacent frames, is greatly decreased and flexibly controlled through the discretization of dynamic scenes based on laser pulse train illumination, and high‐fidelity image reconstruction can be realized within the same observation time window. Furthermore, the superior performance of DI‐CUP is verified by observing femtosecond laser‐induced ablation dynamics and plasma channel evolution, which are hardly resolved in the spatial structures using conventional CUP. It is anticipated that DI‐CUP will be widely and dependably used in the real‐time observations of various ultrafast dynamics.

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Polarimetric‐Spectral‐Sensitive Compressed Ultrafast Photography Enables Real‐Time Intensity Visualization of Time‐Varying Polarized Ultrafast Laser Pulses

Ding,

Guo,

et al. 2023

Laser & Photonics Reviews

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Ultrafast laser pulses with complex spatiotemporal and polarization couplings have shown great application prospects in coherent control, particle acceleration, molecular dynamics excitation, and chiral or anisotropic detection. It is very important to observe the polarization‐coupled ultrafast laser pulses for characterizing the performance of laser source and understanding the laser‐matter interaction, but there is currently no detection technique that can completely characterize them, including the spatio‐, spectral‐, and polarimetric‐temporal information. In this work, a polarimetric‐spectral‐sensitive has been compressed ultrafast photography (PS‐CUP) to realize the real‐time intensity visualization of time‐varying polarized (TP) ultrafast laser pulses. PS‐CUP can not only distinguish the polarization state of a TP pulse, but also realize the spatio‐, spectral‐ and polarimetric‐temporal measurement. To demonstrate the ability of polarization resolving detection, PS‐CUP is used to successfully distinguish between the sinistral and dextral TP pulses and measure the angle and degree of linear polarization of a dextral TP pulse, respectively, and the experimental results are highly consistent with theoretical simulations. Owing to the unprecedented multidimensional detection ability, PS‐CUP is prospected to provide a powerful tool for the diagnosis of various complex ultrafast laser pulses and the detection of ultrafast chiral optics.

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Hyperspectrally Compressed Ultrafast Photography

Cited by 38 publications

References 23 publications

Single-shot spectral-volumetric compressed ultrafast photography

Single-shot spectral-volumetric compressed ultrafast photography

Discrete Illumination‐Based Compressed Ultrafast Photography for High‐Fidelity Dynamic Imaging

Polarimetric‐Spectral‐Sensitive Compressed Ultrafast Photography Enables Real‐Time Intensity Visualization of Time‐Varying Polarized Ultrafast Laser Pulses

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