Two-dimensional infrared spectroscopy using a fast-scanning interferometer and chirped pulse upconversion at 100 kHz
Abstract
We report on a 100-kHz two-dimensional infrared (2DIR) spectrometer in the pump–probe geometry, which we apply to the measurement of the 2DIR spectrum of carboxyhemoglobin. The probe pulses are spectrally resolved by chirped-pulse upconversion (CPU) using a fast 2048-pixel line scan CMOS camera. The two-pulse pump sequence is generated using a conventional interferometer with a fast-scanning mechanical delay line allowing to achieve a scanning frequency of 2 Hz. The resulting modulation frequency of 3.1 kHz is large enough to shift the relevant signal away from the low-frequency noise of the laser source. The combined use of an interferometer on the pump side and of CPU on the probe side opens the way to an improved spectral resolution in both pump and probe dimensions, as compared to currently available 100-kHz 2DIR spectrometers based on pulse shapers and mercury–cadmium telluride detector arrays.
Article Details
Journal Info
The Journal of Chemical Physics
American Institute of Physics
Authors (11)
Mindaugas Jonusas
Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d’Orsay 1 , Orsay,
Quentin Bournet
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles Fabry 2 , Palaiseau,
Adeline Bonvalet
Laboratoire d’Optique et Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris 1 , Palaiseau,
Michele Natile
Amplitude 3 , 11 Avenue de Canteranne, Cité de la Photonique, Pessac,
Andrei-Ovidiu Ersen
Laboratoire d’Optique et Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris 1 , Palaiseau,
Florent Guichard
Amplitude 3 , 11 Avenue de Canteranne, Cité de la Photonique, Pessac,
Yoann Zaouter
Amplitude 3 , 11 Avenue de Canteranne, Cité de la Photonique, Pessac,
Patrick Georges
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles Fabry 2 , Palaiseau,
Frédéric Druon
Université Paris-Saclay, Institut d’Optique Graduate School, CNRS, Laboratoire Charles Fabry 2 , Palaiseau,
Marc Hanna
Manuel Joffre
Laboratoire d’Optique et Biosciences, Ecole Polytechnique, CNRS, INSERM, Institut Polytechnique de Paris 1 , Palaiseau,