The 100 billion frames per second camera that can image light itself


High-speed cameras produce some of the most fascinating imagery in the world. They reveal hidden details and turn the everyday into the extraordinary. But these cameras, which generally top out at around 100,000 frames per second, have nothing on a camera reported last month in Nature . This beast can manage a massive 100 billion frames per second . If you want a high frame rate, you generally use stroboscopic imaging. In normal filming, the illumination is always on, and the camera shutter is operated as fast as possible. However, as the frame rate increases, the shutter time reduces and less light falls on the sensor. The result is a noisy image. In the embedded video, you can see the difference between normal filming and stroboscopic imaging. Stroboscopic imaging builds up an image by pulsing the light source while the camera shutter remains open. Using it, you can capture single images from an event that repeats periodically. The temporal resolution is now given by the duration and timing of the light pulse. Light pulses can be less than a femtosecond (10 -15 s) in duration, while timing can be controlled with femtosecond precision. This allows stop-motion photography with frame rates of trillions per second. Read 15 remaining paragraphs | Comments

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The 100 billion frames per second camera that can image light itself


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