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

Postdoctoral Researchers

Wenjin Luo

Postdoctoral fellow
Office: C229

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

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

Graduate Students

Ben Whetten

Physics Graduate Student
Office: D1B21

Tip enhanced photoluminescence spectroscopy and cavity nano-optics

Yueying Wang

Physics Graduate Student

Office: D1B21

Terahertz nearfield nano-imaging and nano-spectroscopy, ultrafast time-resolved s-SNOM.

Richard Puro

Physics Graduate Student

Office: D1B17

Infrared ultrafast spectroscopy and tip-enhanced strong coupling.

Elizabeth Kane

Physics Graduate Student

Office: D1B19

s-SNOM measurements using grated tips at room and cryogenic temperatures

Sean Driskill

Physics Graduate Student

Office: D1B17

SNOM and tip-enhanced spectroscopy at cryogenic temperatures.

Yuchen Lou

Physics Graduate Student

Office: D1B21

Ultrafast time-resolved s-SNOM, Terahertz nano-imaging

Branden Esses

Physics Graduate Student

Office: D1B21

Infrared s-SNOM on both soft and hard matter materials

Undergraduate Students

Ryan Allenson

Physics Undergraduate Research Assistant

Interested in IR s-SNOM, ultrafast pump-probe spectroscopy, and data theory.

Nic Kowalyk

Physics Undergraduate Research Assistant

Engineering physics design in Ultra-High Vacuum and cryogenic systems involving tip-enhanced atomic force spectroscopy

Nathan Londres

Physics Undergraduate Research Assistant

Tip enhanced photo luminescence and Raman spectroscopy, quantum materials and devices


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

Group fall 2021

Emily Chavez Graduate Student

Fatema Fairooz Graduate Student

Sam Turner Undergraduate research

Nick Entin Undergraduate research

Andreij C. Gadelha Postdoc 2022

Kathryn Hasz Postdoc 2022; Professor, Carthage College

Rui Lyu Postdoc 2022

Peter Lande Undergraduate research

Zuocheng Hu Undergraduate research

Thomas Gray Graduate Student, PhD 2021

Dylan Wharton Undergraduate research

Sam Johnson Graduate Student, PhD 2021; Intel

Booke Wei Undergraduate Student

Rossell-Eddy, Diana Undergraduate Student

Jun Nishida Postdoc; Institute for Molecular Science

Sven Doenges Graduate Student, PhD 2020; Postdoc 2021; Advanced Conductor Technologies

Detao Liu 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