posted 11th May 2025
Since its inception in 1974, the International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) has served as the longest-standing and most influential forum in the field of ultra-high frequency science. Now entering its 51st year, the 2025 edition took place from 17–22 August in Espoo, Finland, hosted by Aalto University. We would like to thank and congratulate Zach Taylor and his team for putting on a great meeting.
A Foundational Forum for Terahertz Science
IRMMW-THz has played a defining role in the evolution of terahertz (THz) research. Originally two separate events—one focused on infrared and millimeter waves, the other on THz electronics—the conferences merged in 2004 and have since operated under a unified name. In 2009, the series formally became part of a non-profit science society, later granted 501(c)(3) status in the United States in 2016.
The conference and its affiliated publications, including the Journal of Infrared, Millimeter and Terahertz Waves and the IEEE Transactions on Terahertz Science and Technology, have been primary platforms for showcasing advancements in THz detectors, components, and applications since the 1970s.
Our business development manager Ken Wood was a member of the IOC for many years, and hosted the conference in Cardiff in 2007.
A Cross-Disciplinary, International Community
The scope of the conference is broad, reflecting the vast potential of THz technology.
Key topic areas typically include:
- Imaging and spectroscopy in biology and medicine
- Astronomical and atmospheric instrumentation
- Security and defence technologies
- Plasma diagnostics, free electron lasers, and synchrotron applications
- Industrial sensing, telecommunications, and ultrafast electronics
- Fundamental studies in chemistry, physics, and material properties
The conference circulates through venues in North America, Europe, and Asia in a 3-year cycle. It has hosted thousands of scientists from over 30 countries. Notably, the 2019 conference in Paris welcomed more than 1,000 participants. Even during the pandemic, attendance at virtual events in 2020 and 2021 exceeded 1,100.
Looking Ahead to Salt Lake City 2026
The upcoming 51st conference in Utah will continue this legacy of international collaboration. The event is expected to attract wide cross-disciplinary engagement from academia, national labs, and industry.
Key dates:
Abstract deadline.............1st March 2026
Notifications....................1st July 2026
Registration and Final Paper Deadline......................15th August 2026
Conference........................11th - 16th October 2026
🡒 For more details, visit the official site: https://www.irmmw-thz.org
As a company born of decades of academic leadership in submillimetre and terahertz instrumentation, Celtic Terahertz Technology recognises the central role the IRMMW-THz conference series continues to play in the evolving global THz community.
