My Account

New to Astromart?

Register an account...

Need Help?

If you have any questions or experiencing an issue please report to support@astromart.com

10 Trillion Frame-per-Second Camera Captures Photon Pulses in Mid-Air

Posted by Guy Pirro   10/16/2018 05:09AM

10 Trillion Frame-per-Second Camera Captures Photon Pulses in Mid-Air

T-CUP, a Compressed Ultrafast Photography camera that integrates a femtosecond streak camera with data acquisition capabilities, has set the world record for realtime imaging speed. The ultrafast camera broke new ground by capturing this image sequence of the temporal focusing of a single femtosecond laser pulse in real time. The camera literally captures images of laser-generated photon pulses in mid-air. This sequence, recorded in 25 frames taken at an interval of 400 femtoseconds, details the light pulse’s shape, intensity, and angle of inclination. (Credit: Institut National de la Recherche Scientifique – INRS) (Image Credit: INRS, Jinyang Liang, Liren Zhu, Lihong V. Wang)

 


 

 

10 Trillion Frame-per-Second Camera Captures Photon Pulses in Mid-Air

What happens when a new technology is so advanced and precise that it operates on a scale beyond our ability to accurately characterize and measure? That happens when lasers used to produce ultrashort pulses in the femtosecond range (10 ^-15 seconds) are far too short to visualize. Although some measurements are possible, nothing beats a clear image according to Professor and ultrafast imaging specialist Jinyang Liang of the INRS (Institut National de la Recherche Scientifique), a part of the Universite du Quebec network in Canada. He and his colleagues, led by Caltech’s Lihong Wang, have developed T-CUP, the world’s fastest camera, capable of capturing ten trillion (10 ^13) frames per second. This new camera literally captures photon pulses in mid-air and makes it possible to freeze time and see phenomena in extremely slow motion. 

 In recent years, the junction between innovations in non-linear optics and imaging has opened the door for new and highly efficient methods for microscopic analysis of dynamic phenomena in biology and physics. But to harness the potential of these methods, there needs to be a way to record images in real time at a very short temporal resolution… In a single exposure.

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.

Compressed ultrafast photography (CUP) was a good starting point. At 100 billion frames per second, this method approached, but did not meet, the specifications required to integrate femtosecond lasers. To improve on the concept, the new T-CUP system was developed based on a femtosecond streak camera that also incorporates a data acquisition type used in applications such as tomography.

“We knew that by using only a femtosecond streak camera, the image quality would be limited,” says Professor Lihong Wang, Professor of Medial Engineering and Electrical Engineering at Caltech and the Director of Caltech Optical Imaging Laboratory (COIL). “So to improve this, we added another camera that acquires a static image. Combined with the image acquired by the femtosecond streak camera, we can use what is called a Radon transformation to obtain high quality images while recording ten trillion frames per second.”

Setting the world record for realtime 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. 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. 

 

 

 

 

“It’s an achievement in itself,” says Jinyang Liang, the lead author of this work, who was an engineer in COIL when the research was conducted, “but we already see possibilities for increasing the speed to up to one quadrillion (10 ^15) frames per second” Speeds like that are sure to offer insight into as of yet undetectable secrets of the interactions between light and matter.

 

 

For more information:

http://www.inrs.ca/english/actualites/worlds-fastest-camera-freezes-time-10-trillion-frames-second

 

https://www.astromart.com/news/show/relativity-and-quantum-mechanics-in-the-universe-at-what-point-does-space-time-become-discrete

https://www.astromart.com/news/show/fundamentals-of-time-dilation-and-quantum-electrodynamics-confirmed

https://www.astromart.com/news/show/researchers-provide-most-complete-experimental-proof-of-quantum-entanglement

 

 

Astromart News Archives:

https://www.astromart.com/news/search?category_id=3&q=.

 

Do you enjoy reading these News Items?

Then click here and buy the Astromart staff a cup of coffee (and maybe even some donuts):

https://www.astromart.com/support-options

 

Flag Counter