martins
Orbiter Founder
Pretty cool: imaging the Mach cone of a light pulse through a scattering medium:
http://advances.sciencemag.org/content/3/1/e1601814.full
Streak cameras aren't really new technology. I used one for my PhD 20 years ago. Also the temporal resolutions reported in the article (10ps) aren't massively improved from the 30-40ps we achieved then. (for comparison, light in vacuum travels 0.3 mm/ps.)
But I never used a streak camera to actually take a 2D image of a scattered wave, let alone a time series. Instead we mapped the temporal dispersions of transmission data from individual surface points picked up by optic fibres onto the streak camera aperture, effectively a set of 0-D images. Also for my application there was no chance of recording a real-time movie sequence. When you shine infrared light through the brain, you have to be grateful for every photon that's picked up on the other side.
Edit: small world - I found the article today via a report in Der Spiegel (http://www.spiegel.de/wissenschaft/technik/kamera-filmt-erstmals-einzelnen-lichtblitz-a-1130982.html), but just spotted that they actually referenced a paper of mine (from '95! showing my age there ...
)
http://advances.sciencemag.org/content/3/1/e1601814.full
Streak cameras aren't really new technology. I used one for my PhD 20 years ago. Also the temporal resolutions reported in the article (10ps) aren't massively improved from the 30-40ps we achieved then. (for comparison, light in vacuum travels 0.3 mm/ps.)
But I never used a streak camera to actually take a 2D image of a scattered wave, let alone a time series. Instead we mapped the temporal dispersions of transmission data from individual surface points picked up by optic fibres onto the streak camera aperture, effectively a set of 0-D images. Also for my application there was no chance of recording a real-time movie sequence. When you shine infrared light through the brain, you have to be grateful for every photon that's picked up on the other side.
Edit: small world - I found the article today via a report in Der Spiegel (http://www.spiegel.de/wissenschaft/technik/kamera-filmt-erstmals-einzelnen-lichtblitz-a-1130982.html), but just spotted that they actually referenced a paper of mine (from '95! showing my age there ...
)
