# Frequency-domain "single-shot" (FDSS) transient absorption spectroscopy using a variable-length grating pair compressor

Source: [Frequency-domain "single-shot" (FDSS) transient absorption spectroscopy using a variable-length grating pair compressor](<https://www.sota2.com/research/paper/68fa1fd67a2b558e2932c9eb>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T19:53:56.736Z

Authors: Ilya A. Shkrob, Dmitri A. Oulianov, Robert A. Crowell

Published: 2004-07-02T15:22:05.000Z

## Abstract

Single-shot ultrafast spectroscopy based on the frequency encoding of transient absorbance kinetics (FDSS) is demonstrated. These kinetics are sampled spectrally using linearly chirped pulses derived from a Ti:sapphire laser. A variable length grating pair compressor is used to provide group velocity dispersion out to -1.6 ps^2 and achieve the sampling of 512 channels per a 2-to-160 ps window with sensitivity \> 5e-4. The possibilities of FDSS are illustrated with studies of three photon ionization of liquid water and one-photon excitation of a thin-film

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/physics/0407017>)

[PDF](<https://arxiv.org/pdf/physics/0407017.pdf>)