Prof. Markus B. Raschke

markus.raschke@colorado.edu
Office: F535, (303)492-1366
Cell: (720)315-9705

Interest in linear and nonlinear optical spectroscopy at surfaces and of nanostructures. For simultaneous spatial information we explore new routes for ultrahigh resolution optical imaging far beyond the diffraction limit. Topics include single molecule spectroscopy, surface photochemistry, molecular plasmonics as well as surface electron dynamics and electron-phonon interaction.

Geoffrey Davis

Lab administrator
nano-optics@colorado.edu
Office: DUAN F533

Sponsored projects specialist. Time Correlated Single Photon Counting.

Jun Nishida

Postdoctoral fellow
jun.nishida@colorado.edu
Office: D1B21

Ultrafast degenerate/non-degenerate near-field pump-probe spectroscopy and their further extension to multidimensional near-field spectroscopy. The samples of interest include catalytic molecular monolayers, organic/inorganic solar cells, and biological systems such as photosynthetic membranes.

PhD 2017 – Stanford University – Advisor: Dr. Michael D. Fayer

Weijin Luo

Postdoctoral fellow
Wenjin.Luo@colorado.edu
Office: D1B17

Ultrafast laser and grating tip-enhanced near-field optical spectroscopy, imaging of low-dimensional materials and related devices.

PhD 2019 – CAS, Shanghai, China – Advisor: Dr. Wei Lu and Dr. Weida Hu

Rui Lyu

Postdoctoral fellow
Rui.Lyu@colorado.edu
Office: D1B21

Tip-enhanced Raman spectroscopy and photoluminescence. Nano-optical imaging of low-dimensional materials, heterostructures and related devices.

PhD 2019 – University of California Riverside – Advisor: Dr. Marc Bockrath

Kathryn Hasz

Postdoctoral fellow
kathryn.hasz@colorado.edu
Office: C229

2D materials, variable temperature scanning probs microscopy, UHV

PhD-2020 University of Pennsylvania – Advisor: Rob Carpick

Roland Wilcken

Postdoctoral fellow
roland.wilcken@colorado.edu
Office: C229

Interested in the understanding of photochemical and photocatalytic reactions by ultrafast spectroscopy and ultrafast nano-imaging methods. Also interested in the investigation and coherent control of chemical reactions and nanostructured materials with phase-shaped laser pulses in the tip-enhanced strong coupling regime.

PhD 2020- LMU Munich – Advisor: Eberhard Riedle

Andreij de Carvalho Gadelha

Postdoctoral fellow
andreij@fisica.ufmg.br
Office:

Tip-enhanced linear and non-linear spectroscopy of devices made of twisted bilayers and Van der Waals heterostructures.

PhD 2019- Federal University of Minas Gerais – Advisors: Ado Jorio, Luiz Gustavo Cançado, and Leonardo C. Campos

Sam Johnson

Physics Graduate Student
Samuel.C.Johnson@colorado.edu
Office: D1B21

Infrared s-SNOM on both soft and hard matter materials.

Thomas Gray

Physics Graduate Student
Thomas.P.Gray@colorado.edu
Office: D1B19

Infrared s-SNOM on both soft and hard matter materials.

Ben Whetten

Physics Graduate Student
benjamin.whetten@colorado.edu
Office: D1B21

Tip enhanced photoluminescence spectroscopy and cavity nano-optics

Diana-Mari Rossell-Eddy

Physics Undergraduate Research Assistant
diana.rosselleddy@colorado.edu

Photophysics and Mineral physics. Interested in UV/Vis spectroscopy, Raman spectroscopy, AFM, and IR s-SNOM. Independent research project: Investigating Vibrational Quantum States of Water on Vacancy-Sites in Beryl

STROBE Summer Undergraduate Research Scholars 2018, 2019

Dylan Wharton

Physics Undergraduate Research Assistant
dywh8174@colorado.edu

IR SNOM, Raman Spectroscopy, temperature dependent imaging of MIT phase transitions

Nicholas Entin

Physics Undergraduate Research Assistant
Nicholas.Entin@colorado.edu

Working on ultra-fast laser and grating tip-enhanced near-field spectroscopy, including imaging of low-dimensional materials and hot electrons.

Peter Lande

Physics Undergraduate Research Assistant
Peter.Lande@colorado.edu

Infrared s-SNOM on both soft and hard matter materials

Brooke Wei

Physics Undergraduate Research Assistant
Brooke.Wei@colorado.edu

Currently working on two different projects; the first one involves characterizing the phase separation of perovskite samples and the second one involves setting up a simulation on Comsol for our tip enhanced antenna coupling experiment

Sam Turner

Physics Undergraduate Research Assistant
satu9617@colorado.edu

IR SNOM, IR s-SNOM, and Raman Spectroscopy

Brian O’Callahan

Staff Scientist
brian.ocallahan@pnnl.gov
PNNL/EMSL

Development of low and room temperature ultrafast infrared s-SNOM at our partner laboratory PNNL/EMSL as part of the user facility to image biological and environmental systems. Experience with tracking ultrafast Surface Plasmon Polariton pulses in space and time using heterodyne detection technique. Studying charge/energy transfer and imaging optoelectronic properties of many low dimensional materials at nanoscale using correlated
single molecule spectroscopy and electrostatic force microscopy (EFM).

Tao Jiang

Assistant Professor
Tao.Jiang@colorado.edu
Tongji University

Tip-enhanced linear and nonlinear optical spectroscopy of low-dimensional materials and related devices; meanwhile I am designing a cryogen-free TERS system with Kyoung-Duck Park.

PhD 2015 – Fudan University, China – Advisor: Dr. Shiwei Wu

Fabian Menges

Branco Weiss Fellow
fabian.menges@colorado.edu

Investigates the elementary steps of thermodynamic processes in quantum materials and molecules, by developing thermo-plasmonic nano-imaging and spectroscopy technique with spatio-temporal resolution down to the nanometer-femtosecond scale. Interested in the thermalization of molecular structures, the emergence of dissipative structures in strongly correlated materials, local thermoelectric effects in topological materials, phononic control of quantum phases, caloric effects in ferroic materials, polariton transport in van der Waals-layered materials.

PhD 2014 – ETH Zurich