INRS Develops a 10 Trillion FPS "Camera"

posted by martyb on Monday October 15 2018, @12:21AM

from the will-need-a-larger-memory-card dept.

World's fastest camera freezes time at 10 trillion frames per second

What happens when a new technology is so precise that it operates on a scale beyond our characterization capabilities? For example, the lasers used at INRS produce ultrashort pulses in the femtosecond range (10^–15 s) that are far too short to visualize. Although some measurements are possible, nothing beats a clear image, says INRS[*] professor and ultrafast imaging specialist Jinyang Liang. He and his colleagues, led by Caltech's Lihong Wang, have developed what they call T-CUP: the world's fastest camera [open, DOI: 10.1038/s41377-018-0044-7] [DX], capable of capturing ten trillion (10¹³) frames per second (Fig. 1). This new camera literally makes it possible to freeze time to see phenomena—and even light!—in extremely slow motion.
[...] Using current imaging techniques, measurements taken with ultrashort laser pulses must be repeated many times, which is appropriate for some types of inert samples, but impossible for other more fragile ones. For example, laser-engraved glass can tolerate only a single laser pulse, leaving less than a picosecond to capture the results. In such a case, the imaging technique must be able to capture the entire process in real time [open, DOI: 10.1364/OPTICA.5.001113] [DX].
[...] Setting the world record for real-time imaging speed, T-CUP can power a new generation of microscopes for biomedical, materials science, and other applications. This camera represents a fundamental shift, making it possible to analyze interactions between light and matter at an unparalleled temporal resolution.
The first time it was used, the ultrafast camera broke new ground by capturing the temporal focusing of a single femtosecond laser pulse in real time (Fig. 2). This process was recorded in 25 frames taken at an interval of 400 femtoseconds and detailed the light pulse's shape, intensity, and angle of inclination.

[*] INRS — "The Institut national de la recherche scientifique (English: 'National Institute of Scientific Research') is the research-oriented branch of the Université du Québec that offers only graduate studies. INRS conducts research in four broad sectors: water, earth and the environment; energy, materials and telecommunications; human, animal and environmental health; and urbanization, culture and society." (Summary is from Wikipedia).

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