Inline Fourier transform imaging spectrometer for mid-infrared ultrashort laser pulses DOI Creative Commons
David N. Purschke, Aleksey Korobenko, A. Staudte

et al.

Optics Express, Journal Year: 2024, Volume and Issue: 32(21), P. 37635 - 37635

Published: Sept. 6, 2024

An inline-delay Fourier transform imaging spectrometer (iFTIS) is used to measure spatiospectral coupling in a mid-infrared (mid-IR) optical parametric amplifier (OPA). The method employs compact inline delay line using birefringent wedge pair and microbolometer array as an sensor, providing continuous spectral coverage from ∼0.4 4.5 µm single device. We find spatial chirp that depends systematically on the OPA wavelength setting 3-4 range also identify couplings beyond chirp, highlighting importance of advanced metrological techniques for this region. Furthermore, we investigate effect depletion 2 pump beam observe complex reshaping. Our work opens door new applications iFTIS mid-IR laser science.

Language: Английский

Two decades of imaging photoelectron circular dichroism: from first principles to future perspectives DOI Creative Commons
Chris Sparling, Dave Townsend

Physical Chemistry Chemical Physics, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

There has been a recent surge in the number of studies using PECD to study gas-phase chiral molecules. This tutorial will give synopsis field, discuss novel applications technique, and highlight some future challenges.

Language: Английский

Citations

0
Invited commentary: hollow core glass fibre—the perfect pipe for light DOI Creative Commons
P. St. J. Russell

eLight, Journal Year: 2025, Volume and Issue: 5(1)

Published: April 2, 2025

Language: Английский

Citations

0
Few-femtosecond soft X-ray transient absorption spectroscopy with tuneable DUV-Vis pump pulses DOI Creative Commons

Jacob P. Lee,

Timur Avni, Oliver Alexander

et al.

Optica, Journal Year: 2024, Volume and Issue: 11(9), P. 1320 - 1320

Published: Sept. 3, 2024

Achieving few-femtosecond resolution for a pump-probe experiment is crucial to measuring the fastest electron dynamics and creating superpositions of valence states in quantum systems. However, traditional UV-Vis pump pulses cannot achieve few-fs durations usually operate at fixed wavelengths. Here, we present, our knowledge, an unprecedented temporal tuneability UV-Vis-pumped soft X-ray transient absorption spectroscopy. We have combined deep-UV visible tuneable from resonant dispersive wave emission hollow capillary fiber with attosecond probe high harmonic generation. sub-5-fs time resolution, sub-fs interferometric stability, continuous 230 700 nm. demonstrate that can initiate ultrafast photochemical reaction different atomic sites be resolved simultaneously. These capabilities will allow studies electronic large range photochemical, photobiological photovoltaic reactions.

Language: Английский

Citations

2
Multimode solitons in optical fibers: a review DOI
Yifan Sun, Pedro Parra‐Rivas, Govind P. Agrawal

et al.

Photonics Research, Journal Year: 2024, Volume and Issue: 12(11), P. 2581 - 2581

Published: July 30, 2024

This review describes recent theoretical and experimental advances in the area of multimode solitons, focusing primarily on fibers. We begin by introducing basic concepts such as spatial modes supported a fiber coupled mode equations for describing different group delays nonlinear properties these modes. several analytic approaches used to understand formation including those based 3D+1 spatiotemporal Schrödinger equation (NLSE) its approximate 1D+1 representation that has been found be highly efficient studying self-imaging phenomena graded-index An innovative Gaussian quadrature approach is faster numerical simulations NLSE. The impact linear coupling discussed separate section using generalized Jones formalism because relevance space-division multiplexed optical communication systems. last devoted relevant studies involving solitons.

Language: Английский

Citations

1
Inline Fourier transform imaging spectrometer for mid-infrared ultrashort laser pulses DOI Creative Commons
David N. Purschke, Aleksey Korobenko, A. Staudte

et al.

Optics Express, Journal Year: 2024, Volume and Issue: 32(21), P. 37635 - 37635

Published: Sept. 6, 2024

An inline-delay Fourier transform imaging spectrometer (iFTIS) is used to measure spatiospectral coupling in a mid-infrared (mid-IR) optical parametric amplifier (OPA). The method employs compact inline delay line using birefringent wedge pair and microbolometer array as an sensor, providing continuous spectral coverage from ∼0.4 4.5 µm single device. We find spatial chirp that depends systematically on the OPA wavelength setting 3-4 range also identify couplings beyond chirp, highlighting importance of advanced metrological techniques for this region. Furthermore, we investigate effect depletion 2 pump beam observe complex reshaping. Our work opens door new applications iFTIS mid-IR laser science.

Language: Английский

Citations

0