Abstract
We demonstrate a frequency-resolved optical gating (FROG) device that uses
a sweepshot geometry that combines the advantages of multishot and single-shot
pulse-measurement devices, has only one moving part, a galvanometer, and requires
no computer control. Like a multishot device, it focuses the beam to a small
spot (rather than a line focus) and has a high intensity in the nonlinear
medium. Like single-shot devices, it makes measurements quickly, generating
an entire FROG trace on a single camera screen (rather than requiring many
camera downloads).
© 2001 Optical Society of America
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