Basic Schematic (IMAGE)
Caption
(Top). Basic schematic of the proposed imaging system. The sampling pulse hits the target and goes through four optical image converters (OIC), which are the non-collinear optical parametric amplifiers (OPA). The idler signals (labelled as "Recorded") appear when the pump laser pulses (labelled as "Trigger") hits the OPAs. Introducing a delay between these trigger pulses allows for taking images in quick succession by capturing the idler signals using conventional CCD cameras. (Bottom) Four sequential images of a rotating optical field spinning at 10 trillion radians per second.
Credit
Zeng et al., doi 10.1117/1.AP.2.5.056002.
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