Nanophotonic Devices Group

The Nanophotonic devices group designs, fabricates, and characterizes nanophotonic devices including lasers, waveguides, microresonators, quantum dots, photonic crystals and sensors.

We work on broad range of topics from advanced passive devices for frequency and spatial domain light manipulation to complex integrated optoelectronic components with tailored material responses to allow light emission and light control in the temporal domain. Our group also strives to connect the state-of-the-art technologies with the real-world application by developing novel photonic devices.

Our research efforts can be categorized into the following topics:

Please visit the dedicated pages for more information.
Exciting research opportunities are available for students who are interested. 

Group Leader: Kresten Yvind

Picture of the Month

Optical microscope image of "burned" photoresist mask after InP dry etching test. Credits: Andrey Marchevsky

For previous "Picture of the Month" winners, Visit link.

MOVPE program and mask layout

Design

Design of devices: Optical, electrical and mechanical simulations, mask design, epitaxial design.
Yellow room

Fabrication

All our research projects have an element of synthesis, i.e. typically fabrication activities in the Danchip cleanroom. The group is running the MOVPE system and has extensive knowledge within e-beam lithography, dry etching and complex electro-optic  device geometries.
Probing station

Characterization

We characterize both materials and devices using a number of test stations. Setup for planar devices, edge-emitting lasers, VCSELs, mode-locked lasers and micro-PL have been built.

News Update

October 2019

  • Our invited paper in APL photonics has been selected as the featured article, and also highlighted in Scilight.

    Using an integrated AlGaAsOI microresonator, we demonstrate all-optical wavelength conversion of a high-speed data signal with low operation power at the sub-milliwatt level. Our work is a step towards a fully-integrated chip solution for high-speed optical signal processing.

“Ultra-low power all-optical wavelength conversion of high-speed data signals in high-confinement AlGaAs-on-insulator microresonators” by Erik Stassen, Chanju Kim, Deming Kong, Hao Hu, Michael Galili, Leif Katsuo Oxenløwe, Kresten Yvind, and Minhao Pu, APL Photonics, 4, 100804 (2019). 

September 2019

  • Minhao Pu has received the ERC Starting Grants of DKK 11 Million for his project:
    Chip-Scale Self-Referenced Optical Frequency Comb Sources (REFOCUS).


    You can read more about the grant at DTU News and ERC official website.
    If you wish to watch the video coverage, please click on the button.
    Image result for youtube icon

August 2019

  • Kresten Yvind was appointed full professor on April 1st. He will give his inaugural lecture on "Nanofabrication of photonic devices for communication and medical diagnostics". The lecture will take place on August 23, 2019 from 15:00 to 16:00 at Building 101, Room M1. Follow link for more information about the lecture.

June 2019

  • Erik Stassen successfully defended his PhD thesis titled Nonlinear Integrated Photonics. Congratulations to Erik!
  • The annual Nanophotonic devices BBQ and badminton doubles took place at the Smurf Palace in Virum on July 21, 2019. Winner was David Larsson from OCTLIGHT who is actually not a real smurf but will guard the prizesmurf until next year. First looser was Elizaveta Lebedkina who will look after Freja in the coming year. Honorable mention goes to the rest of the contestants (something for the CV…)

April 2019

  • Congratulations to Aurimas Sakanas for his successful PhD defence with his thesis on Buried Heterostructure Photonic Crystal Lasers.
  • Group leader Kresten Yvind was appointed full professor on April 1st. Congratulations!

March 2019

December 2018

  • Our recent work on AlGaAs-on-insulator chip for optical signal processing made the cover of Laser & Photonics Reviews 2018:

Minhao Pu, Hao Hu, Luisa Ottaviano, Elizaveta Semenova, Dragana Vukovic, Leif Katsuo Oxenløwe, and Kresten Yvind. "Ultra‐Efficient and Broadband Nonlinear AlGaAs‐on‐Insulator Chip for Low‐Power Optical Signal Processing." Laser & Photonics Reviews (2018)

March 2018

  • Congratulations to Hitesh Kumar Sahoo for his successful PhD defence with his thesis on Wavelength Tunable MEMS VCSELs

November 2017

  • Congratulations to our group leader Kresten Yvind  for winning the Electro-prize 2017 from the association of Danish engineers for “Fabrication of advanced semiconductor components for optical communication”. More (in danish).

October 2017

September 2017

  • Congratulations to Miranda Mitrovic (Now at OFS) for successfully defending her thesis on Fabrication and characterization of silicon rich nitride waveguides for nonlinear applications.
    Thanks to Luisa Ottaviano for being a wonderful colleague for 9 years. We wish you all the very best at Alight

August 2017

  • Dr. Minhao Pu will give an invited talk at the Asia Communications and Photonics Conference (ACP 2017) which will take place in Guangzhou, China during the period 10th to 13th November 2017. In his talk “An ultra-efficient nonlinear integrated platform for optical signal generation and processing”, he will review the recent progress in the nonlinear AlGaAs-on-insulator platform.
    Welcome to Czcibor Ciostek and Bartosz Ston from Wroclaw University of Science & Technology, who will work with Elizaveta on growth and characterization of quantum wells.

July 2017

  • Congratulations to Mohammad Esmail Aryaee Panah for successfully defending his thesis on Design and fabrication of mid-infrared plasmonic materials based on highly doped III-V semiconductors.

June 2017

May 2017

  • Lars and Xiaowei have received a grant from the Danish Council for Independent Research | Technology and Production (DFF-FTP) and title of the project is “Athermal Silicon Waveguide Platform for Temperature-Insensitive Photonic Integration”. Collaborating with Zhejiang University in China and Odense University Hospital in Denmark, this two-years grant is aiming to resolve the thermal drift problem of on-chip silicon photonic devices for optical communications as well as for optical biosensors.