Integration of Conventional Surface Science Techniques with Surface-Sensitive Azimuthal and Polarization Dependent Femtosecond-Resolved Sum Frequency Generation Spectroscopy Article Swipe

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Zhipeng Huang , Tobias Roos , Yujin Tong , R. Kramer Campen ·

YOU? · · 2024 · Open Access · · DOI: https://doi.org/10.48550/arxiv.2402.16138

Experimental insight into the elementary processes underlying charge transfer across interfaces has blossomed with the wide-spread availability of ultra-high vacuum set-ups that allow the preparation and characterization of solid surfaces with well-defined molecular adsorbates over a wide ranges of temperatures. Thick layers of molecular adsorbates or heterostructures of 2D materials generally preclude the use of electrons or atoms as probes in such characterization. However with linear photon-in/photon-out techniques it is often challenging to assign the observed optical response to a particular portion of the interface. We and prior workers have demonstrated in work under ambient conditions that by full characterization of the symmetry of the second order nonlinear optical susceptibility, i.e. the $χ^{(2)}$, in sum frequency generation (SFG) spectroscopy, this problem can be overcome. Here we describe an ultra-high vacuum system built to allow conventional UHV sample preparation and characterization, femtosecond and polarization resolved SFG spectroscopy, the azimuthal sample rotation necessary to fully describe $χ^{(2)}$ symmetry and with sufficient stability to allow scanning SFG microscopy. We demonstrate these capabilities in proof-of-principle measurements on CO adsorbed on Pt(111) and of the clean Ag(111) surface. Because this set-up allows both full characterization of the nonlinear susceptibility and the temperature control and sample preparation/characterization of conventional UHV set-ups we expect it to be of great utility in investigation of both the basic physics and applications of solid, 2D material heterostructures.

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Femtosecond Spectroscopy Azimuth Femtochemistry Polarization (electrochemistry) Sum-frequency generation Optics Materials science Surface (topology) Physics Optoelectronics Chemistry Laser Nonlinear optics Mathematics Quantum mechanics Physical chemistry Geometry

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Type: preprint
Language: en
Landing Page: http://arxiv.org/abs/2402.16138
PDF: https://arxiv.org/pdf/2402.16138
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Related Works: 10
OpenAlex ID: https://openalex.org/W4392224294

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DOI: https://doi.org/10.48550/arxiv.2402.16138

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Title: Integration of Conventional Surface Science Techniques with Surface-Sensitive Azimuthal and Polarization Dependent Femtosecond-Resolved Sum Frequency Generation Spectroscopy

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Type: preprint

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Language: en

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Publication year: 2024

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Publication date: 2024-02-25

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Authors: Zhipeng Huang, Tobias Roos, Yujin Tong, R. Kramer Campen

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Landing page: https://arxiv.org/abs/2402.16138

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Concepts: Femtosecond, Spectroscopy, Azimuth, Femtochemistry, Polarization (electrochemistry), Sum-frequency generation, Optics, Materials science, Surface (topology), Physics, Optoelectronics, Chemistry, Laser, Nonlinear optics, Mathematics, Quantum mechanics, Physical chemistry, Geometry

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abstract_inverted_index.polarization	142
abstract_inverted_index.well-defined	31
abstract_inverted_index.investigation	214
abstract_inverted_index.spectroscopy,	118, 145
abstract_inverted_index.temperatures.	39
abstract_inverted_index.susceptibility	193
abstract_inverted_index.susceptibility,	109
abstract_inverted_index.characterization	26, 99, 189
abstract_inverted_index.heterostructures	46
abstract_inverted_index.characterization,	139
abstract_inverted_index.characterization.	62
abstract_inverted_index.heterostructures.	226
abstract_inverted_index.proof-of-principle	170
abstract_inverted_index.photon-in/photon-out	66
abstract_inverted_index.preparation/characterization	200
cited_by_percentile_year
countries_distinct_count	0
institutions_distinct_count	4
citation_normalized_percentile