@article{nokey,

title = {Achromatic frequency doubling of supercontinuum pulses for transient absorption spectroscopy},

author = {E Keil and P Malevich and J Hauer},

url = {http://www.osapublishing.org/oe/abstract.cfm?URI=oe-29-24-39042},

doi = {10.1364/OE.442400},

year  = {2021},

date = {2021-11-22},

journal = {Optics Express},

volume = {29},

number = {24},

pages = {39042-39054},

abstract = {We present achromatic frequency doubling of supercontinuum pulses from a hollow core fiber as a technique for obtaining tunable ultrashort pulses in the near UV and blue spectral range. Pulse energies are stable on a 1.1% level, averaged over 100 000 shots. By the use of conventional optics only, we compress a 0.2 µJ pulse at a center wavelength of 475 nm to a pulse duration of 12 fs, as measured by X-FROG. We test the capabilities of the approach by employing the ASHG-pulses as a pump in a transient absorption experiment on β-carotene in solution.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {Static and dynamic water structures at interfaces: A case study with focus on Pt(111)},

author = {A C D L\'{o}pez and T Eggert and K Reuter and N G H\"{o}rmann},

url = {https://aip.scitation.org/doi/abs/10.1063/5.0067106},

doi = {10.1063/5.0067106},

year  = {2021},

date = {2021-11-18},

journal = {The Journal of Chemical Physics},

volume = {155},

number = {19},

pages = {194702},

keywords = {},

pubstate = {published},

tppubtype = {article}

}

@article{nokey,

title = {How Exciton\textendashPhonon Coupling Impacts Photoluminescence in Halide Perovskite Nanoplatelets},

author = {M Gramlich and C Lampe and J Drewniok and A S Urban},

url = {https://doi.org/10.1021/acs.jpclett.1c03437},

doi = {10.1021/acs.jpclett.1c03437},

year  = {2021},

date = {2021-11-18},

journal = {The Journal of Physical Chemistry Letters},

pages = {11371-11377},

abstract = {Semiconductor nanocrystals are receiving increased interest as narrow-band emitters for display applications. Here, we investigate the underlying photoluminescence (PL) linewidth broadening mechanisms in thickness-tunable 2D halide perovskite (Csn−1PbnBr3n+1) nanoplatelets (NPLs). Temperature-dependent PL spectroscopy on NPL thin films reveals a blue-shift of the PL maximum for thicker NPLs, no shift for three monolayer (ML) thick NPLs, and a red-shift for the thinnest (2 ML) NPLs with increasing temperature. Emission linewidths also strongly depend on NPL thickness, with the thinnest NPLs showing the smallest temperature-induced broadening. We determine the combined interaction of exciton\textendashphonon coupling and thermal lattice expansion to be responsible for both effects. Additionally, the 2 ML NPLs exhibit a significantly larger Fr\"{o}hlich coupling constant and optical phonon energy, possibly due to an inversion in the exciton fine structure. These results illustrate that ultrathin halide perovskite NPLs could illuminate the next generation of displays, provided a slightly greater sample homogeneity and improved stability.},

keywords = {},

pubstate = {published},

tppubtype = {article}

}