Fast-frame single-shot pump-probe spectroscopy with chirped-fiber Bragg gratings

To acquire single-shot pump-probe waveforms for each laser pulse at a high repetition rate and high signal-to-noise ratio, we combined the photonic time-stretch technique and time-encoding method using a chirped-fiber Bragg grating (CFBG) and a grating-pair pulse compressor. By changing the pre-chir...

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Bibliographic Details
Published in:Optics letters 2019-01, Vol.44 (1), p.163-166
Main Authors: Kobayashi, Masataka, Arashida, Yusuke, Yamashita, Genki, Matsubara, Eiichi, Ashida, Masaaki, Johnson, Jeremy A, Katayama, Ikufumi
Format: Article
Language:English
Subjects:
Bragg gratings
Gratings (spectra)
Long fibers
Photonics
Signal to noise ratio
Spectroscopy
Spectrum analysis
Waveforms
Windows (intervals)
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Summary:To acquire single-shot pump-probe waveforms for each laser pulse at a high repetition rate and high signal-to-noise ratio, we combined the photonic time-stretch technique and time-encoding method using a chirped-fiber Bragg grating (CFBG) and a grating-pair pulse compressor. By changing the pre-chirping of the probe pulse, a variable time window of the pump-probe traces from 1.4 to 17 ps was demonstrated. The use of a CFBG improved the signal-to-noise ratio of the waveforms by minimizing the loss of probe pulses due to the transmission through a long fiber. These techniques are promising, for example, in applications in multi-timescale pump-probe spectroscopy of irreversible phenomena.
ISSN:0146-9592
1539-4794
DOI:10.1364/OL.44.000163