The North American Massachusetts Institute of Technology (MIT) Media Lab has recently developed a speed-of-light camera system that captures 1 trillion frames per second to observe the trajectory of photons.
To make a video that captures the movement of photons, scientists used an ultra-high-speed scanning camera, which is generally used to measure light intensity and light duration. However, this photo opportunity splits the picture into multiple single-dimensional images due to the deflection of protons in the electric field, so the resulting video is actually a combination of trillions of separate images.
MIT develops speed-of-light cameras: one trillion frames per second
It is reported that the camera system has 500 camera sensors, and each sensor is programmed to take pictures with a delay of one trillionth of a second. While the sensor is triggered, the scientist rotates the two mirrors to piece together the separated images into a complete picture.
The scene itself is a pulsed light source. Scientists use a titanium sapphire laser, so it can emit a pulsed light source regularly, so all exposures look the same because they can be combined together to form a very slow dynamic video.
In practical applications, it can be used as a "speed camera". Scientists say it can be used for medical imaging, such as optical ultrasound applications. In applications where the camera cannot record repetitive activities, it can be used to capture how light is scattered on an object and analyze its physical structure. In addition, the camera system may also be used in consumer cameras in the future to artificially create lighting effects produced by other expensive studio lighting equipment such as softboxes.
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