At the Technical University of Denmark (DTU), we recently established a new research center, NanoPhoton – Center for Nanophotonics, to perform fundamental and applied research on a newly discovered class of semiconductor nanostructures, termed dielectric bowtie cavities. These cavities confine light to spots in the nanometer range and open several new and previously unimagined possibilities within quantum and information technology.
In the Center, we want to explore the bowtie cavity concept (which we have coined extreme dielectric confinement EDC) to address one of the most important and yet unsolved challenges in information technology: integrating photonics and electronics. Solving that problem could lead to considerable speed-up of computers and interconnects and significant energy savings. However, progress is required in several research disciplines, including light-matter interaction in nanostructures, nanofabrication, nanoscale material characterisation, and modelling and design.
NanoPhoton is enabled by a significant center grant from the Danish National Research Foundation and gathers leading experts from several Departments at DTU. The open projects announced here are concerned with design, fabrication and characterisation of EDC nanostructures and their operation as photodetectors and lasers. The projects will be carried out in our state-of-the-art clean room facilities and optical laboratories, where you will work with dedication to break the current limits of nanophotonic integration. Two projects are available:
- III-V semiconductor nanostructures for Extreme Dielectric Confinement of Light:
Design, fabricate and characterise advanced Indium Phosphide EDC nanostructures with embedded layers of active quantum wells and quantum dots.
- Silicon nanostructures for Extreme Dielectric Confinement of Light:
Development of a novel photodetector based on two-photon-absorption in silicon and integration with field effect transistor for next-generation on-chip interconnects.
Responsibilities and tasks
You will be working closely with other members of the NanoPhoton team to design suitable EDC structures for use as lasers or photodetectors, and you will be responsible for the fabrication and subsequent characterisation of the devices. This will involve:
- Design and cleanroom fabrication of semiconductor nanostructures
- Optical characterisation of the fabricated structures
- Interpretation of measurements in relation to theoretical models
- Collaboration with other NanoPhoton team members
Applicable for PhD scholarships
Candidates should have a two-year master’s degree (120 ECTS points) or a similar degree with an academic level equivalent to a two-year master’s degree. We are looking for an ambitious PhD student with a background in electrical engineering, physics, or similar, and with experimental experience, preferably in nanofabrication and optical characterisation. Excellent written and spoken English skills are mandatory.
Approval and Enrolment
The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes at DTU. For information about our enrolment requirements and the general planning of the PhD study programme, please see the DTU PhD Guide.
Applicable for Postdoc positions
Candidates should hold a PhD degree (or equivalent) and have experience with one or more of the following topics:
- Cleanroom fabrication of silicon or III-V semiconductors including e-beam lithography and dry etching
- Design (FDTD or similar) of photonic structures. Topology optimisation.
- Characterisation of optoelectronic devices
In addition, we expect good communication skills, a strong drive, the ability to work in a team and interest in supervising Masters and PhD students.
The assessment for both positions will be made by Professor Kresten Yvind and Professor Jesper Mørk.
Salary and terms of employment
The appointment will be based on the collective agreement with the Danish Confederation of Professional Associations. The allowance will be agreed upon with the relevant union.
The period of employment is 3 years for the PhD position and 2 years for the postdoc position.
You can read more about career paths at DTU here.
Further information may be obtained from Professor Kresten Yvind, firstname.lastname@example.org tel.: +45 4525 6366.
You can read more about NanoPhoton at nanophoton.dtu.dk and DTU Fotonik at fotonik.dtu.dk.
If you are applying from abroad, you may find useful information on working in Denmark and at DTU at DTU – Moving to Denmark.
Your complete online application must be submitted no later than 5 September 2021 (Danish time). Applications must be submitted as one PDF file containing all materials to be given consideration. To apply, please open the link “Apply online”, fill out the online application form, and attach all your materials in English in one PDF file. The file must include:
- A letter motivating the application (cover letter)
- Grade transcripts and BSc/MSc diploma (applicants applying for the PhD position)
- Excel sheet with translation of grades to the Danish grading system (see guidelines and Excel spreadsheet here – in the right hand column) (applicants applying for the PhD position)
- PhD Diploma (applicants applying for the postdoc position)
- List of publications (applicants applying for the postdoc position)
If you have preferences between the two offered topics, please indicate that in the motivation letter.
Incomplete applications will not be considered. Candidates applying for the PhD position may apply prior to obtaining their master’s degree but cannot begin before having received it.
All interested candidates irrespective of age, gender, disability, race, religion or ethnic background are encouraged to apply.