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1 trillion frames per second
- Thread starter jander6442
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give credit where its due and post to the original video 
Ramesh Raskar: Imaging at a trillion frames per second | Video on TED.com
crazy stuff this idea, just the way they do it is out of this world.
Ramesh Raskar: Imaging at a trillion frames per second | Video on TED.com
crazy stuff this idea, just the way they do it is out of this world.
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I like the part about a "photon bullet" sure looks like it don't it!
sinner
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No doubt this is a new dimension in photography, very interesting pictures and explaination on applications is feasible.. Good luck to him!
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WOW. It seems that in the near future we won't merely be lpm'ing our lasers, but also checking them out with femto-photography, astounding. Did you see this on the right side of the page on devilWAH's link? Boaz Almog
jcranmer
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Very interesting stuff.
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Did you make that up?
Did you watch the video and see at approx. 1 minutes 21 seconds into it the 532nm green laser output and then the portion of output frozen in time?
While Ramesh Raskar didn't say 532nm laser it looked like a 532nm green to me?
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He certainly spoke laser and few Femto second exposure when showing a 532nm green beam.
The light source for the bottle picture was a Titanium Sapphire laser which typically output 650nm to 1100 more commonly used in 800nm-1100nm range
Maybe I will e-mail him and ask if the bottle photo was infrared rendered as black and white.
The light source for the bottle picture was a Titanium Sapphire laser which typically output 650nm to 1100 more commonly used in 800nm-1100nm range
Maybe I will e-mail him and ask if the bottle photo was infrared rendered as black and white.
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So... you think the gentlemen at MIT are using a $50 pointer as the centerpiece of their 6-8 figure budget?
No, they rendered it in actual infrared.
How would there be a green reflection on top of the laser if the light had not yet traveled far enough to reflect back onto it?
Not to mention DPSS isn't nearly fast enough to produce a single pulse of light at that speed, let alone from a pointer.
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OK Ramesh Raskar responded to me and the the bullet of light in a bottle video was a very complicated very precise process involving million of images assembled to make the the final video. They use an indirect 'stroboscopic' method that records millions of repeated measurements by careful scanning in time and viewpoints and then rearrange the data to create a 'movie' of a nanosecond long event depicting a "photon bullet" moving through a bottle.
The "Bullet of Light" slow-motion playback creates an illusion of a group of photons traveling thru the bottle.
For a better look a "volumetric propagation" components used to assemble the bottle video, see you tube video:
Laser pulse shooting through a bottle and visualized at a trillion frames per second - YouTube
For more detailed information, FAQ explainations, and some fantastic images, see web site: Femto Photography, Camera Culture Group, MIT Media Lab
The "Bullet of Light" slow-motion playback creates an illusion of a group of photons traveling thru the bottle.
For a better look a "volumetric propagation" components used to assemble the bottle video, see you tube video:
Laser pulse shooting through a bottle and visualized at a trillion frames per second - YouTube
For more detailed information, FAQ explainations, and some fantastic images, see web site: Femto Photography, Camera Culture Group, MIT Media Lab
