Ultrafast Transient Absorption Spectroscopy

A Helios pump-probe spectrometer (Ultrafast Systems, LLC, Florida, USA) was used in a transmission mode. 800-nm pulses (≥ 35 fs, 4.0 mJ per pulse, at 1 kHz) were generated by a SpitFire Pro 35F regenerative amplifier (Spectra Physics, Newport, CA, USA). The amplifier was pumped with an Empower 30 Q-switched laser ran at 20 W. A MaiTai SP oscillator provided the seed pulses with 55-nm bandwidth. The wavelength of the pump was tuned using an optical parametric amplifier, OPA-800CU (Newport Corporation, Newport, CA, USA), equipped with harmonic generators. Responses from pure solvents were used for the chirp correction of the transient-absorption data. The data analysis was carried out using Surface Xplorer (Ultrafast Systems, LLC, Florida, USA) and IgorPro v. 8 (WaveMetrics, Inc., Lake Oswego, OR, USA) (Purc et al. 2016 (link); Bao et al. 2014 (link); Upadhyayula et al. 2015 (link); Gray et al. 2017 (link); Guo et al. 2013 (link)).

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Clark J.A., Orłowski R., Derr J.B., Espinoza E.M., Gryko D.T, & Vullev V.I. (2021). How does tautomerization affect the excited-state dynamics of an amino acid-derivatized corrole?. Photosynthesis Research, 148(1-2), 67-76.

Publication 2021

IgorPro v. 8

Pulses Regenerative Solvents Transient Transmission

Corresponding Organization :

Other organizations : University of California, Riverside, Polish Academy of Sciences, Institute of Organic Chemistry

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Variable analysis

independent variables

Wavelength of the pump

dependent variables

Transient-absorption data

control variables

800-nm pulses (≥ 35 fs, 4.0 mJ per pulse, at 1 kHz) generated by a SpitFire Pro 35F regenerative amplifier
Empower 30 Q-switched laser ran at 20 W used to pump the amplifier
MaiTai SP oscillator providing the seed pulses with 55-nm bandwidth
Optical parametric amplifier, OPA-800CU, equipped with harmonic generators used to tune the wavelength of the pump
Responses from pure solvents used for the chirp correction of the transient-absorption data

positive controls

Not explicitly mentioned

negative controls

Not explicitly mentioned

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