Doctoral students in III-nitride-based lasers

Publiceringsdatum: 2025-10-28

Nu har du chansen att börja jobba som doktorand hos Chalmers Tekniska Högskola AB. Intresserade sökes för heltid-jobb hos Chalmers Tekniska Högskola AB - är du intresserad? De letar efter någon som vill jobba 6 månader eller längre. Platsen där jobbet finns ledigt är i Göteborg.

Om du är intresserad av en karriär inom doktorand, ta en titt på de två lediga tjänsterna som Chalmers Tekniska Högskola AB erbjuder för att se om det är en matchning. Har du vad som krävs för att arbeta som doktorand hos Chalmers Tekniska Högskola AB? Ansök innan torsdag den tjugosjunde november 2025 och ta reda på det!

Jobbannons

As the successful candidate you will play an essential role in the development of surface-emitting semiconductor lasers that only exists 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 Department of Microtechnology and Nanoscience advances the frontiers in photonics, quantum technology, nanoscience and future electronic systems - for technical and societal development. Our cross-disciplinary approach gives interesting collaborations in academy, industry and society, and is a driving force for innovations, results and breakthroughs. We offer a vibrant, international research environment and direct access to world-class nanofabrication facilities.

About the research project  

The Photonics Laboratory focuses on optoelectronics, ultrafast optics, and fiber-optical communication. A strong research focus is on ultraviolet (UV) and blue surface-emitting devices, such as vertical-cavity surface-emitting lasers (VCSELs) and photonic-crystal surface emitting lasers (PCSELs), where our expertise lies in device design, simulation, laser fabrication, and characterization. Our team has pioneered a thin-film lift-off process for AlGaN materials using electrochemical etching, enabling integration with high-quality photonic structures. This has led to world-first demonstrations of blue VCSELs with with high-contrast gratings for polarization pinning, thin-film flip-chip UVB LEDs, and optically pumped UVB and UVC VCSELs at 310 and 275 nm, as well as the first optically pumped UV-B and UV-C PCSELs. Our lab now seeks two PhD students to work on blue PCSELs and UV VCSELs.

Who we are looking for

The following requirements are mandatory:

• To qualify as a Doctoral student, you must have a Master's degree (masterexamen) of 120 credits or a Master’s degree (magisterexamen) of 60 credits* in Physics, Material Science, Photonics or Electrical Engineering, with knowledge in semiconductor physics and optoelectronic devices 
• You will need strong written and verbal communication skills in English
• for students with an education earned outside of Sweden, a 4-year Bachelor’s degree is accepted. 

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

• Develop your own scientific concepts and communicate the results of your research verbally and in writing 
• Develop blue PCSELs or UV VCSELs as part of our research team
• Work in close collaboration with international partners responsible for epitaxial growth
• Take courses at an advanced level within the Graduate school of Microtechnology and Nanoscience
• 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  

• The Doctoral student positions are fully funded from start. 
• The position is limited to four years, with the possibility to teach up to 20%, which extends the position to five years. 
• A starting salary of 34,550 SEK per month (valid from May 25, 2025). 
• Doctoral studies require physical presence throughout the entire study period. A valid residence permit must be presented by the study start date; otherwise the admission may be withdrawn. 

What we offer 

• As a Doctoral student at Chalmers, you are an employee and enjoy all employee benefits. Read more about  working at Chalmers  and our benefits for employees. 
• A dynamic and inspiring working environment in the coastal city of Gothenburg. 
• Read more about Sweden’s generous parental leave, subsidized day care, free schools, healthcare etc at Move To Gothenburg. 

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.

Find more general information about doctoral studies at Chalmers here.  

Application procedure 

The application should be written in English and 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 

Personal letter 

• A brief introduction about yourself. 
• A brief motivation as to why you are interested in this position. 

Bachelor’s and, if available, master’s thesis together with the transcripts. 

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. Contact details to references will be requested after the interview. 

We welcome your application no later than November 27th 2025.

For questions, please contact:  

Professor Åsa Haglund

Email: asa.haglund@chalmers.se

Tel: +46(0)31-772 1592

Dr. Joachim Ciers

Email: joachim.ciers@chalmers.se

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.