Single-shot 25-frame burst imaging of ultrafast phase transition of Ge2Sb2Te5 with a sub-picosecond resolution

Takakazu Suzuki, Ryohei Hida, Yuki Yamaguchi, Keiichi Nakagawa, Toshiharu Saiki, Fumihiko Kannari

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We captured ultrafast two-dimensional (2D)-burst images of the crystalline-to-amorphous phase transition of Ge2Sb2Te5. These transitions were induced by a femtosecond laser pulse, and the images, with a sub-picosecond temporal resolution, were acquired on a single-shot basis through the change in local optical transmittance. We employed a 2D-burst imaging method of sequentially timed all-optical mapping photography utilizing spectral filtering (SF-STAMP). The SF-STAMP system consists of a 25-beam-generating diffractive optical element, a band-pass filter, and two Fourier transform lenses. We used a frequency-chirped broadband pulse and achieved 25-frame burst imaging with an interval of 133 fs in a singleshot time window of 3.2 ps.

Original languageEnglish
Article number092502
JournalApplied Physics Express
Volume10
Issue number9
DOIs
Publication statusPublished - 2017 Sep 1

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shot
bursts
Phase transitions
Diffractive optical elements
Imaging techniques
Opacity
Photography
Bandpass filters
Ultrashort pulses
Lenses
Fourier transforms
photography
Crystalline materials
pulses
bandpass filters
temporal resolution
transmittance
lenses
broadband
intervals

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

Cite this

Single-shot 25-frame burst imaging of ultrafast phase transition of Ge2Sb2Te5 with a sub-picosecond resolution. / Suzuki, Takakazu; Hida, Ryohei; Yamaguchi, Yuki; Nakagawa, Keiichi; Saiki, Toshiharu; Kannari, Fumihiko.

In: Applied Physics Express, Vol. 10, No. 9, 092502, 01.09.2017.

Research output: Contribution to journalArticle

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