The Nano-Optics Group

Principal Investigator

Prof. Markus B. Raschke
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

Office: DUAN F533

Sponsored projects specialist. Time Correlated Single Photon Counting.

Postdoctoral Researchers

Jun Nishida

Postdoctoral fellow
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
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
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
Office: C229

2D materials, variable temperature scanning probs microscopy, UHV

PhD-2020 University of Pennsylvania – Advisor: Rob Carpick

Roland Wilcken

Postdoctoral fellow
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

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
Office: D1B21

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

Thomas Gray

Physics Graduate Student
Office: D1B19

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

Ben Whetten

Physics Graduate Student
Office: D1B21

Tip enhanced photoluminescence spectroscopy and cavity nano-optics

Undergraduate Students

Diana-Mari Rossell-Eddy

Physics Undergraduate Research Assistant

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

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

Nicholas Entin

Physics Undergraduate Research Assistant

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

Infrared s-SNOM on both soft and hard matter materials

Brooke Wei

Physics Undergraduate Research Assistant

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

IR SNOM, IR s-SNOM, and Raman Spectroscopy


Brian O’Callahan

Staff Scientist

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

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

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