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How short can a pulsed laser flash be during pulsed-laser holography?
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holography
Figure 1: Gabor's original method for creating holograms.
In pulsed-laser holography, the duration of a laser flash can be extremely short, typically lasting between 1/10,000,000 and 1/100,000,000 of a second.12
This rapid, high-intensity pulse allows for the creation of holograms of moving objects by effectively making them appear at rest during the exposure. For a usable hologram to be produced, the object must not move more than 1/10 of a wavelength of light during the duration of the pulse. This technique is particularly valuable for studying fast-moving objects, such as those in wind-tunnel experiments or chemical reactions, where continuous-wave lasers would be unsuitable due to the requirement for longer exposure times.1