Sequentially timed all-optical mapping photography (STAMP) utilizing spectral filtering.

Authors:
Kenichi Hirosawa
Kenichi Hirosawa
Keio University
Japan
Keiichi Nakagawa
Keiichi Nakagawa
University of Tokyo Hospital
Japan
Keisuke Goda
Keisuke Goda
LIGO Laboratory
Ichiro Sakuma
Ichiro Sakuma
Graduate School of Engineering
Fumihiko Kannari
Fumihiko Kannari
Keio University
Japan

Opt Express 2015 Nov;23(23):30512-22

We propose and experimentally demonstrate a new method called SF-STAMP for sequentially timed all-optical mapping photography (STAMP) that utilizes spectral filtering. SF-STAMP is composed of a diffractive optical element (DOE), a band-pass filter, and two Fourier transform lenses. Using a linearly frequency-chirped pulse and converting the wavelength to the time axis, we realize single-shot ultrafast burst imaging. As an experimental demonstration of SF-STAMP, we monitor the dynamics of a laser ablation using a linearly frequency-chirped broadband pulse (>100 nm) that is temporally stretched up to ~40 ps. This imaging method is expected to be effective for investigating ultrafast dynamics in a diverse range of fields, such as photochemistry, plasma physics, and fluidics.
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November 2015
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