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O: Fachverband Oberflächenphysik
O 24: Poster Scanning Probe Techniques: Method Development
O 24.4: Poster
Montag, 17. März 2025, 18:00–20:00, P2
High-collection efficiency optical scanning probe microscopy with on-axis parabolic mirror — •Aleksander Bogucki1, Magdalena Grzeszczyk1, Yeon-ji Kim1, Yewon Kim1, German Orlov1, Lei Fang1, Wonjun Jang1,2, and Andreas Heinrich1,2 — 1Center for Quantum Nanoscience, Institute for Basic Science (IBS), Seoul, South Korea — 2Department of Physics, EWHA Womans University, Seoul, South Korea
Scanning probe microscopy (SPM) techniques are essential for investigating surface physics, from single atoms to complex systems like organic molecules. Combining SPM with optical spectroscopy enhances our ability to explore system dynamics. However, existing setups face photon collection efficiency challenges due to spatial constraints, particularly for systems with long-lived excited states.
We present a homemade optics-integrated scanning probe microscope using a centered on-axis parabolic mirror with a short focal length. The scanning component employs a combined AFM/STM qPlus sensor with a long tip. Free-beam optics maximize photon collection efficiency, reaching an estimated upper limit of 90%. This design eliminates chromatic aberrations, enables polarization measurements, and operates under ultra-high vacuum (UHV) at low temperatures (4K), ensuring high stability and precision.
Keywords: Scanning Tunneling Microscope; Atomic Force Microscope; Optical spectroscopy; Ultra-high vacuum