Principal Investigator

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.
2010-present: University of Colorado
2006-2010: University of Washington
2002-2006: Staff Scientist, Max-Born-Institute for Nonlinear and Ultrafast Optics, and Humboldt University, Berlin
1999-2001: Postdoc, University of California, Berkeley
1995-1999: PhD, Max-Planck-Institute for Quantum Optics, and Technische Universitat, Munich
Lab Administrator

Geoffrey Davis
Lab administrator
nano-optics@colorado.edu
Office: DUAN F533
Sponsored projects specialist. Time Correlated Single Photon Counting.
Postdoctoral Researchers

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
Graduate Students

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
Undergraduate Students

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
Affiliates

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
Former Group Members
Doenges, Sven Graduate Student, PhD 2020; Postdoc 2021; Advanced Conductor Technologies
Liu, Detao Graduate Student, University of Electronic Science and Technology of China, Chengdu
Chengda Pan Graduate Student, China Eastern Normal University, Shanghai
Chuanlin Li Graduate Student, University of Electronic Science and Technology of China (UESTC) Chengdu
Joy Ma Undergraduate, MIT
Zhou Zhou Graduate student, Tongji University
Molly May Graduate student, Phd 2019; Postdoc, University of Innsbruck
Omar Khatib Postdoc 2019; Staff Scientist, Duke University
Kyoung-Duck Park Postdoc 2018; Professor, UNIST, South Korea
Eric Muller Postdoc 2018; Professor, Colgate University
Evan Anderson Undergraduate Honor student 2018; Graduate student, University of Arizona, Tucson
Brian O’Callahan Graduate student, PhD 2017; Postdoc, PNNL/EMSL
Jiarong Wang Master student 2017
Vasily Kravtsov Graduate student, PhD 2017; Postdoc, ITMO University (Saint Petersburg)
Ben Pollard Graduate student, PhD 2017; Postdoc CU PER group
Bernd Metzger Postdoc 2017; Research Scientist, TRUMPF
Ronald Ulbricht Postdoc 2016; Nanyang Technological University
Peter Van Blerkom Masters Student 2016
Dan Hammerland Honors thesis 2016
Honghua Yang Graduate student, PhD 2015; Bruker Inc.
Joanna Atkin Postdoc 2014; Professor, UNC Chapel Hill
Silke Möbius exchange student DAAD-RISE 2014,; graduate student at University of Göttingen
Paul Sass Honors Thesis 2013, Researcher at PNNL; graduate student Rutgers
Sam Berweger Graduate student, PhD 2012; Postdoc NIST
Justin Gerber Honor thesis 2013; graduate student UC Berkeley
Molly May Honors thesis 2012; graduate student CU Boulder
Rob Olmon Graduate student, PhD 2012; Intel Portland
Andrew Jones Graduate student, PhD 2012; Postdoc University of Wisconsn, Madison
Evan Jasper Honors thesis 2012; graduate student Ohio State
Xiaoji Xu Postdoc 2011; Professor, Lehigh University
Emily Chavez undergraduate/REU, 2010-2012;
Erik Hebestreit exchange student DAAD-RISE 2010, Diplom thesis 2012; graduate student University of Jena
Simon Hannibal exchange student DAAD-RISE 2010; Manchester University
Ryan Murdick postdoc, 2010; RHK
Erik Josberger undergraduate research, visiting scientist, 2006-2010; graduate student UW
Kseniya Deryckx undergraduate/graduate student, MS 2010; University of Washington School of Medicine
Julie Cass REU student, 2010; graduate student UW
Alexandria Anderson graduate student, MS 2010; Femtolasers, Max-Born Institute
Catalin Neacsu graduate student Max-Born-Institute, PhD 2008, postdoc UW 2010; Femtolasers
Friedrich Kirchner Diplom thesis, Humboldt University, 2009; Attoworld
Matthias Rang Diplom Max-Born-Institute, UW, 2007; Forschungsinstitut am Goetheanum, CH
Rachel Hinman summer student, 2009
Brent Crabtree undergraduate, 2009
Felix Rust undergraduate research, 2002-2004
Gesine Steudle undergraduate research 2003-2004; PhD Humboldt University 2012
Leo Molina graduate student 2003; PhD University of Tubingen 2010, TU Darmstadt