Open AccessBoxCARS 2D IR spectroscopy with pulse shaping
Author(s) -
Ziareena Al-Mualem,
Xiaobing Chen,
Joseph Shirley,
Cong Xu,
Carlos R. Baiz
Publication year - 2023
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.471984
Subject(s) - optics , pulse shaping , spectroscopy , pulse (music) , signal (programming language) , noise (video) , phase (matter) , materials science , physics , computer science , laser , artificial intelligence , detector , image (mathematics) , programming language , quantum mechanics
BoxCARS and pump-probe geometries are common implementations of two-dimensional infrared (2D IR) spectroscopy. BoxCARS is background-free, generally offering greater signal-to-noise ratio, which enables measuring weak vibrational echo signals. Pulse shapers have been implemented in the pump-probe geometry to accelerate data collection and suppress scatter and other unwanted signals by precise control of the pump-pulse delay and carrier phase. Here, we introduce a 2D-IR optical setup in the BoxCARS geometry that implements a pulse shaper for rapid acquisition of background-free 2D IR spectra. We show a signal-to-noise improvement using this new fast-scan BoxCARS setup versus the pump-probe geometry within the same configuration.