Simulated (d and e) and experimental (f) image of mid-field of plasmonic

beam steering device designed to focus mid-IR light 500 microns above

a subwavelength slit.


University of Illinois

Urbana Champaign

Electrical and Computer Engineering



The Mid-Infrared Photonics group is a research group affiliated with the Micro and Nanotechnology Lab (MNTL) at the University of Illinois Urbana Champaign.  Our group studies mid-infrared (mid-IR) emitters, detectors, and photonic devices for applications in Defense and Security, Sensing, and Communications.

Please use this website to learn more about our lab and our research.  If you have any questions about the group, the Micro and Nanotechnology Lab, or the UIUC ECE Department, feel free to get in touch!

-Dan Wasserman

Associate Professor

University of Illinois Urbana Champaign

Electrical and Computer Engineering Department


Latest News:

5/18/2016: Ryan's manuscript entitled "Epsilon-Near-Zero Photonic Wires" is published in ACS Photonics.  This work was a collaboration with Viktor Podolskiy and Christopher Roberts at UMass Lowell.  Congrats All!

4/26/2016: Yujun and Yuan-Zhi welcome Terrance to the world!!  Congratulations!!

4/20/2016: Narae is awarded a Semiconductor Research Corporation Graduate Fellowship!!  Congratulations Narae!

4/2/2016: Ryan and Emily welcome Nathan Liu to the world!!  Congratulations Ryan and Emily, I look forward to Nathan joining the group in 2037 for his PhD!

2/10/2016: Runyu passes his Pre-Lim exam.  Congratulations Ryan!!

2/6/2016: Our paper entitled "Multiplexed infrared detection using resonant radio frequency circuits" is published in Applied Physics Letters.  This work was a collaboration between our group, Prof. Songbin Gong's group at UIUC, AFRL and UMass Lowell.  Congrats to Ryan!

1/14/2016: Prof. Wasserman is the featured engineer on

12-30-2015: Our manuscript "Engineering the Reststrahlen band with hybrid plasmon/phonon excitations" is published in MRS Communications. Congratulations to first author Will Streyer, and collaborators at Notre Dame, including Kaijun Feng (Hoffman group) for this effort! 

12-8-2015: Our manuscript "Enhanced Optical Transmission through MacEtch-Fabricated Buried Metal Gratings" is published in Advanced Materials. Congratulations to first authors Runyu (Ryan) Liu, Christopher Roberts (Podolskiy group) and Xiang Zhao (Li group) for this collaborative effort! 

UI Press Release

11-13-2015: Congratulations to Will Streyer for passing his Pre-Lim Exam!!

11-11-2015: Congratulations to Dr. Daniel Zuo on successfully defending his PhD Wednesday morning!  Great job Dan!!

11-05-2015: Our collaborators' (Prof. Larry Lee and Daehwan Jung of Yale University) latest, "Mid-infrared electroluminescence from InAs type-I quantum wells grown on InAsP/InP metamorphic buffers", is published in J. Appl. Phys. Congrats to Daehwan and Lan!

10-30-2015: Lan successfully passes his Pre-Lim Exam.  Congratulations to Lan!!

9-25-2015: Will's Far-IR review is published in Optics Express, a collaboration with Kaijun Feng and Prof. Anthony Hoffman at Notre Dame.  Congrats Will and Kaijun!!

9-18-2015: Lan wins one of 2 Best Student Paper Awards at the 2015 Electronic Materials Conference, which was held in June at "the" Ohio State University.  Lan's winning paper was titled: " Mid-Infrared Emisson from In(Ga)Sb Layers on InAs(Sb) ".  Congratulations Lan!!

8-24-2015: Kaijun and Will 's paper entitled "Localized surface phonon polariton resonances in polar gallium nitride", led by our collaborators at Notre Dame, is published in Appl. Phys. Lett. Congrats to Kaijun and Will!!

8-24-2015: Will's paper entitled "Selective absorbers and thermal emitters for far-infrared wavelengths", a collaboration with Kaijun Feng and Prof. Anthony Hoffman at Notre Dame, is published in Appl. Phys. Lett. Congrats to Will and Kaijun!!

8-13-2015: Lan is awarded the Nick and Katherin Holonyak, Jr. Graduate Student Award. The Nick and Katherine Holonyak, Jr. Graduate Student Award was established in 2002 to recognize a doctoral student who has participated in technological research in semiconductor optoelectronics and the high speed microelectronics area. Congrats to Lan!!

7-23-2015: Prof. Wasserman is promoted to Associate Professor with indefinite Tenure.

2-24-2015:  Daniel Zuo's latest work is published in Applied Physics Letters.  Congrats to Daniel!!

2-4-2015:  Our review on mid-infrared plasmonic materials is published in the Journal of Nanophotonics .  Congrats to yujun, Shyamala, and Travis!!

2-4-2015:  Our collaboration with WPAFB on PtGe's is published in Optics Express.  Congrats to Will and thanks to the AFRL team and collaborators!!

2-3-2015:  Undergraduate group member Sukrith Dev accepts our RA offer, will be joinign the team in August.  Welocme Sukrith!!

1-21-2015:  Narae Yoon joins the Wasserman group as a first year graduate student.  Welcome Narae!!

9-29-2014:  Ryan and Yujun's Optics Express on mid-IR PL from InSB insertion layers in InAs is published!  Congrats Ryan and Yujun!!

9-22-2014:  Stephanie and Ryan's JVSTB makes the Editor's Picks and Most Read This Month lists!  Also, Stephanie's Nanophotonics Review article is still the most downloaded article in the Nanophotonics history.

9-4-2014:  Aaron and Joshua's J. Optics paper “Flat mid-infrared composite plasmonic materials using lateral doping-patterned semiconductors ”, in collaboration with the Bhargava group at UIUC, published today.  Congrats to Aaron, Josh, Ryan and Stephanie!! 

9-4-2014:  Accompanying editorial for the J. Opt. Special Edition on Mid-IR and THz PHotonics.

8-25-2014:  Lan's APL on submonolayer QDs (with collaborators at Yale) published today.  Congrats Lan!

8-4-2014: Stephanie and Ryan's JVSTB on n-doped InSb published!  Congrats Stephanie and Ryan!

6-4-2014: Stephanie's farewell lunch.  Stephanie will be joining the faculty at the University of Delaware, in the Materials Science Department!!  Congratulations to Stephanie!!!  We are all sad to see her leave but also so proud of the excellent work she has done!

4-2-2014: Will's Appl. Phys. Lett. on GaP surface phonon polaritons published!  Congrats Will!

3-21-2014: Phys. Rev. B on Epsilon-near-zero enhanced light transmission through a subwavelength slit", from our collaborators at UMass Lowell is published!

Congrats Sandeep!

1-10-2014: Stephanie's Phys. Rev. Lett. on "All-Semiconductor Negative Index Plasmonic Absorbers", with Lan and collaborators at Sandia and UMass Lowell, is published!

Congrats Stephanie!

10-30-2013: Undergraduate Travis Hamilton's research experience featured in Engineering at Illinois Fieldnotes!

9-12-2013: UI Press Release for Stephanie's nanoantenna work!  Picked up by:



9-17-2013: Stephanie is one of only 15 participants selected for the Northeastern University ADVANCE Future Faculty Workshop in early October!  This is a well-deserved honor!! Congratulations to Stephanie!!!

9-3-2013"All-Semiconductor Plasmonic Nanoantennas for Infrared Sensing", published in Nano Letters.  Congratulations Stephanie, Lan, and Aaron!!

5-29-2013"Wafer-Scale Production of Uniform InAsyP1-y Nanowire Array on Silicon for Heterogeneous Integration", a collaboration between Prof. Xiuling Li's, our group, and researchers in Korea, published in ACS Nano.

4-21-2013:  Johnny (King Group, UIUC), Stephanie, and Chris's (Podolskiy Group, UML) paper "Near-field infrared absorption of plasmonic semiconductor microparticles studied using atomic force microscope infrared spectroscopy", published in Applied Physics Letters.  Congrats all!


AFM Boosts IR

4-10-2013Daniel Zuo's paper "Direct observation of minority carrier lifetime improvement in InAs/GaSb type-II superlattice photodiodes via interfacial layer control" published in Appl. Phys. Lett.  Congrats Daniel!

4-02-2013: Will, Stephanie, Gino and Tom's paper "Strong absorption and selective emission from engineered metals with dielectric coatings" published in Optics Express!

3-26-2013: Stephanie's paper "Epitaxial growth of engineered metals for mid-infrared plasmonics" published in J. Vac. Sci. Technol. B.

1-19-2013: Our invited review paper Towards nano-scale photonics with micro-scale photons: the opportunities and challenges of mid-infrared plasmonics”, published online at Nanophotonics.

12-20-2012: Our collaborator's (Daehwan Jung, Yuncheng Song, and Prof. Minjoo Larry Lee, Yale University) paper "2.8um emission from type-I quantum wells grownm on InAsxP1-2/InP metamorphic graded buffers" published in Applied Physics Letters with Lan Yu as a co-author.  Congratulations to Daehwan and Lan!!

9-5-2012: Lan's paper "Electroluminescence from Nanosphere Lithography fabricated Quantum Dots " published in Applied Physics Letters.  Congratulations to Lan!!

5-14-2012: Stephanie's paper "Mid-infrared designer metals" published in Optics Express.  Congratulations to Stephanie!!

4-24-2012: Joshua Mason successfully defends his PhD dissertation: "Selective Thermal Emission from Mid-Infrared Plasmonic and Metamaterial Structures".  Congratulations to Josh!!

4-23-2012: David Adams successfully defends his PhD dissertation: "Plasmonic beam steering and designer metals in the mid-infrared".  Congratulations to David!!

10-26-2011: Josh's paper "Strong Coupling of Molecular and Mid-Infrared Perfect Absorber Resonances" published in IEEE Photonics Technology Letters.  Congratulations to Josh!!

9-15-2011: David A., Troy, David S.'s paper "Enhanced Light Funneling Through Subwavelength Apertures Using Epsilon Near Zero Materials" published in Physical Review Letters!  Congratulations to David A., Troy, and David S.!!

6-20-2011: Kevin's paper "Voltage-controlled active mid-infrared plasmonic devices" published in the Journal of Applied Physics Letters.  Congratulations to Kevin, Troy, and David A.!!

6-15-2011: Josh's paper "Strong absorption and selective thermal emission from midinfrared metamaterials " published in Applied Physics Letters.  Congratulations to Josh and Shaun!!!

Post-Doc Positions Available : We are currently looking to hire a post-doctoral research associate in Experimental Optics: Design, fabrication, and characterization of mid-IR photonic and plasmonic structures for security and defense applications.  Applicants must have PhD, experience with optical characterization, preferably in the mid-IR, and cleanroom/fabrication experience.

All applicants please send CV, Cover Letter, and contact information for 3 references to

4-27-2011: Our paper "Multiscale Beam Evolution in Corrugated Plasmonic Structures" published in Optics Express.  Congratulations to David A. and Suko!!!

3-31-2011: Congratulations to Troy Ribaudo after his successful thesis defense today!!!

1-25-2011: Professor Wasserman wins NSF CAREER award.

1-20-2011: Our paper "Observation of Rabi Splitting from Surface Plasmon Coupled Conduction State Transitions in Electrically Excited InAs Quantum Dots" is published in Nano-Letters.  Congrats David and Troy!!

11-21-2010: Josh's paper "Selective Emission from patterned steel" is published in Optics express.  Congrats Josh!!

9-15-2010: David S. wins the Physics Department First Year Graduate Student Award.  Congratulations David!!

5-21-2010: David A.'s Plasmonic Mid-Infrared Beam Steering paper published in Appllied Physics Letters!

5-12-2010: Troy Ribaudo wins the 2010 Top Graduate Student in the Physics Department Award.  Congratulations Troy!

3-23-2010: Xifeng's nanolithographically defined QD paper published in J. Vac. Sci. Technol. B!

3-18-2010: Photonics Center hosts the second UML Photonics Center Physics Activity Day Challenge!

David Brooks GraniteGeek column on our Physics I class in the Nashua Telegraph

See the trailer for my Physics I class this semester:

10/22/09: Dr. Wasserman wins AFOSR Young Investigator Award.


current projects