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All-optical high spatial-temporal resolution photography with raster principle at 2 trillion frames per second
Optics Express
|October 7, 2021
Summary
We developed a novel single-shot ultrafast all-optical photography with raster principle (OPR) to capture real-time imaging of ultrafast phenomena. This technique achieves 2 trillion frames per second, enabling atomic-scale dynamic process observation.
Area of Science:
- Optics and Photonics
- Ultrafast Imaging
- Scientific Instrumentation
Background:
- Observing ultrafast phenomena requires high temporal and spatial resolution.
- Existing imaging techniques face limitations in capturing dynamic processes at the atomic scale.
Purpose of the Study:
- To propose and demonstrate a novel single-shot ultrafast all-optical photography with raster principle (OPR).
- To achieve real-time imaging of ultrafast phenomena with unprecedented speed and resolution.
Main Methods:
- The OPR system comprises a sequentially timed module (STM), spectral-shaping module (SSM), and raster framing camera (RFC).
- STM encodes frequency-time mapping, SSM handles system calibration.
- RFC samples targets with microlens arrays and frames based on frequency-time-spatial position conversion.
Main Results:
- Demonstrated single-shot recording of transient scenes with a spatial resolution of ~90 lp/mm.
- Achieved a frame number of 12 and a frame rate of 2 trillion frames per second (Tfps).
- The system is capable of frame rates up to 10 Tfps or more.
Conclusions:
- The OPR technique offers high spatial-temporal resolution and high frame rates for observing dynamic processes.
- It enables the study of complex spatial structures at the atomic time scale (10 fs–1 ps).
- Potential applications include plasma physics, laser-induced shock waves, and condensed matter dynamics.
