Two-Dimensional Electronic Spectroscopy of Rhodamine 700 Using an 8 fs Ultrabroadband Laser Source and Full-Wavelength Reference Detection DOI Creative Commons

Camilla Gajo,

Caleb J. C. Jordan, Thomas A. A. Oliver

et al.

The Journal of Physical Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Two-dimensional electronic spectroscopy (2DES) is one of the premier tools for investigating photoinduced condensed phase dynamics, combining high temporal and spectral resolution to probe ultrafast phenomena. We have coupled an ultrabroadband laser source generated with a hollow-core fiber, compressing pulses pulse duration 8 fs, boxcars 2DES interferometer constructed from only conventional optics. The resulting ultrabroad bandwidth allow superior coverage typically broad molecular line shapes in near-IR/visible region room temperature solutions, exploration excited state dynamics at earliest time epoch complex systems. new spectrometer characterized by examining dye molecule Rhodamine 700 methanol solution. These data exhibit rich vibrational wavepacket unraveling key vibronic couplings between multiple modes. For first degenerate broadband experiment, we demonstrate implementation full-wavelength reference detection correct wavelength-dependent intensity fluctuations. net result 4-5× increased signal-to-noise (S/N) ratio compared acquired without detection, yielding typical S/N = 28. facilitates more rapid acquisition examination samples lower optical densities, thus concentrations, than used experiments. advances will help alleviate demands on precious measurements.

Language: Английский

Generation of isolated attosecond pulses in CdS semiconductor using polarization gating technique and tailored two-color pulse system DOI Creative Commons

Amin Sadeghifaraz,

Elnaz Irani

Scientific Reports, Journal Year: 2025, Volume and Issue: 15(1)

Published: March 4, 2025

This research uses a two-color pulse system and polarization gating technique to generate single attosecond pulses from femtosecond laser interaction with cadmium sulfide semiconductor. The rotating elliptical is designed produce up 420 as. Also, the intensity of can be improved by using two-color-polarizing gate technique. In this presented modifications, isolated greater shorter time width about 400 as generated. Generation such an intense great achievement that helps for measuring ultrafast phenomena.

Language: Английский

Citations

0
Two-Dimensional Electronic Spectroscopy of Rhodamine 700 Using an 8 fs Ultrabroadband Laser Source and Full-Wavelength Reference Detection DOI Creative Commons

Camilla Gajo,

Caleb J. C. Jordan, Thomas A. A. Oliver

et al.

The Journal of Physical Chemistry A, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Two-dimensional electronic spectroscopy (2DES) is one of the premier tools for investigating photoinduced condensed phase dynamics, combining high temporal and spectral resolution to probe ultrafast phenomena. We have coupled an ultrabroadband laser source generated with a hollow-core fiber, compressing pulses pulse duration 8 fs, boxcars 2DES interferometer constructed from only conventional optics. The resulting ultrabroad bandwidth allow superior coverage typically broad molecular line shapes in near-IR/visible region room temperature solutions, exploration excited state dynamics at earliest time epoch complex systems. new spectrometer characterized by examining dye molecule Rhodamine 700 methanol solution. These data exhibit rich vibrational wavepacket unraveling key vibronic couplings between multiple modes. For first degenerate broadband experiment, we demonstrate implementation full-wavelength reference detection correct wavelength-dependent intensity fluctuations. net result 4-5× increased signal-to-noise (S/N) ratio compared acquired without detection, yielding typical S/N = 28. facilitates more rapid acquisition examination samples lower optical densities, thus concentrations, than used experiments. advances will help alleviate demands on precious measurements.

Language: Английский

Citations

0