Multi-wavelength discrete pulse train generation using chromatic aberration of time lens for ultrafast single-shot optical imaging
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We investigate a multi-wavelength discrete pulse train generation technique in which a relative delay is precisely controlled by a chromatic aberration of a time lens for application to ultrafast single-shot optical imaging based on sequentially timed all-optical mapping photography (STAMP). We use an intensity modulator functioning as a time filter, a phase modulator functioning as a time lens, and a standard single-mode fiber functioning as a dispersive medium to experimentally confirm four wavelength-multiplexed optical pulses, each with a duration of 17 ps and a tunable time interval, that are triggered by a ~ 100-ps electrical pulse signal. Our proposed laser configuration is suitable for the STAMP system under a moderate frame interval of a picosecond range in terms of compactness, cost, and energy consumption.
KeywordsPulse generation Optical fiber Time lens Chromatic aberration STAMP
This work was supported by Konica Minolta Science and Technology Foundation and JSPS KAKENHI Grant number 17K14691.
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Conflict of interest
On behalf of all the authors, the corresponding author states that there is no conflict of interest.
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