2 PhD student positions in III-nitride-based lasers

Publiceringsdatum: 2025-03-18

Positionen som doktorand hos Chalmers Tekniska Högskola AB är öppen och väntar på en lämplig kandidat - kan det vara du? Chalmers Tekniska Högskola AB söker någon som vill arbeta heltid under 6 månader eller längre. Kanske är det du? För detta jobb är Göteborg den angivna tjänsteorten.

Chalmers Tekniska Högskola AB behöver fler anställda som stödjer arbetet inom doktorand. Kolla in deras två lediga tjänster för att se om du har vad som krävs. Bli en del av teamet hos Chalmers Tekniska Högskola AB som doktorand genom att ansöka senast söndag den tjugosjunde april 2025.

Jobbannons

Join our team at the forefront of optoelectronics innovation! The successful candidate will play an essential role in the development of surface-emitting semiconductor lasers that only exist in a few research laboratories in the world. You will be given the opportunity to work in one of the world-leading groups on blue-UV surface-emitting lasers and combine device design and numerical simulations with device processing and characterization in close collaboration with international partners who are experts on epitaxial growth.

About us

The Photonics Laboratory at the Department of Microtechnology and Nanoscience (MC2) is a dynamic research group of about 35 members, focusing on optoelectronics, ultrafast optics, and fiber-optical communication. Our primary research includes ultraviolet (UV) and blue surface-emitting devices such as VCSELs, PCSELs, LEDs, and RCLEDs. We specialize in device design and simulation, laser fabrication, and material and device characterization.

We have developed a novel thin-film lift-off process for AlGaN materials based on electrochemical etching, enabling the integration of III-nitride thin films with photonic structures like dielectric cavities with improved quality factors. This innovation has led to several breakthroughs, including the world’s first blue VCSEL with a high-contrast grating for polarization pinning, thin-film flip-chip UVB LEDs, and optically pumped VCSELs at 310 and 275 nm. Recently, we also demonstrated the first optically pumped UV-B and UV-C PCSELs.

We are now looking to expand our team with two PhD students: one focusing on blue PCSELs and the other on UV VCSELs.

Who we are looking for

We seek candidates with the following qualifications:

• To qualify as a PhD student, you must have a master's level degree corresponding to at least 240 higher education credits in physics, material science, photonics, electrical engineering or a relevant field
• Knowledge in semiconductor physics and optoelectronic devices
• Strong written and verbal communication skills in English

The following experience will strengthen your application:

• Experience from device simulations, device fabrication in a clean room environment or device characterization

You should be able to work independently as well as in a group.

What you will do

As a PhD student in our research group, you will focus on developing blue PCSELs or UV VCSELs, engaging in experimental work. You will receive hands-on training in device fabrication using advanced equipment in our clean room and in the characterization of fabricated devices in our measurement lab. Additionally, you will have access to our in-house-developed simulation tools for laser design and modeling. This position offers the unique opportunity to collaborate closely with international research partners specializing in epitaxial growth, ensuring a dynamic and globally connected research experience.

You will also:

• Take courses at an advanced level within the Graduate school of Mictrotechnology and nanoscience
• Develop your own scientific concepts and communicate the results of your research verbally and in writing.
• The position generally also includes teaching on Chalmers' undergraduate level or performing other duties corresponding to up to 20 percent of working hours.

Contract terms and what we offer

• The PhD-positions are fully funded from start
• As a PhD student at Chalmers, you are an employee and enjoy all employee benefits. Read more about working at Chalmers and our benefits for employees.
• The position is limited to four years, with the possibility to teach up to 20%, which extends the position to five years.
• A dynamic and inspiring working environment in the coastal city of Gothenburg.
• A starting salary of 34,550 SEK per month (valid from May 25, 2025).

Chalmers is dedicated to improving gender balance and actively works with equality projects, such as the GENIE Initiative for gender equality and excellence. We celebrate diversity and consider equality and inclusion as fundamental aspects of all our activities.

If Swedish is not your native language, Chalmers offers Swedish courses to help you settle in.

Discover more

Find more general information about doctoral studies at Chalmers here. 

Application procedure

The application should be written in English be attached as PDF-files, as below. Maximum size for each file is 40 MB. Please note that the system does not support Zip files.

• CV: (Please name the document: CV, Family name)
• Personal letter
• Two references that we can contact
• Bachelor’s and, if available, master’s thesis together with the transcripts.
• Documents confirming your English proficiency: e.g. TOEFL/IELTS test results, a course/project report written in English (if your bachelor’s/master’s thesis is not in English).

Use the button at the foot of the page to reach the application form. 

Please note: The applicant is responsible for ensuring that the application is complete. Incomplete applications and applications sent by email will not be considered.

Application deadline: April 27, 2025

For questions, please contact:

Professor Åsa Haglund

Photonics Laboratory

E-mail: asa.haglund@chalmers.se

Phone: +46(0)31-772 1592

We look forward to your application!

• ** Chalmers declines to consider all offers of further announcement publishing or other types of support for the recruiting process in connection with this position. ***   

Chalmers University of Technology in Gothenburg conducts research and education in technology and natural sciences at a high international level. The university has 3100 employees and 10,000 students, and offers education in engineering, science, shipping and architecture. With scientific excellence as a basis, Chalmers promotes knowledge and technical solutions for a sustainable world. Through global commitment and entrepreneurship, we foster an innovative spirit, in close collaboration with wider society.

Chalmers was founded in 1829 and has the same motto today as it did then: Avancez – forward.