Laser development through collaborative research
A research group led by Professors Motoaki Iwatani, Tetsuya Takeuchi, and Satoshi Kamiyama of the Department of Materials Science and Engineering, Meijo University, Professor Hideto Miyake of the Graduate School of Engineering, Mie University, USHIO INC. and Seishin Trading Co. The research group has developed a vertical AlGaN-based deep-ultraviolet (UV-B) semiconductor laser, which is essential for realizing a high-power deep-ultraviolet semiconductor laser. The research results were published in Applied Physics Express, an international journal of the British Physical Society on October 16, 2023.
Key Points of the Case
- Successful development of vertical AlGaN-based deep ultraviolet (UV-B) semiconductor lasers, which are indispensable for high optical output power.
- AlGaN-based UV semiconductor lasers are fabricated by crystal growth on insulating substrates to obtain high-quality crystals. We have succeeded in developing the insulating substrate exfoliation technology, device process technology, and optical resonator formation technology necessary to realize vertical AlGaN-based deep-ultraviolet semiconductor lasers.
- The fabricated vertical AlGaN-based deep-ultraviolet semiconductor laser exhibits laser-specific properties such as extremely sharp emission spectrum (consistent wavelength of light), TE polarization characteristics (consistent phase of light), spot-like emission pattern (a characteristic of coherent light), and characteristics of threshold current confirmation. The laser emission wavelength is 1.5 nm. The laser has an oscillation wavelength of 298.1 nm, which corresponds to the UV-B region.
- The laser is expected to be applied to medical applications such as biotechnology and skin disease treatment, as well as to industrial fields such as UV curing processes and laser processing.
<Modified and added content as of November 13, 2012
Some of the results of this project were supported by the Ministry of the Environment’s “Demonstration Project for Accelerating the Practical Application of Innovative CO2-saving Technologies to Combat Infectious Diseases: Technological Development of Highly Efficient and Long-life Deep UV LED and Demonstration of Bacterial and Viral Inactivation and Decarbonization Effects,” “JSPS Grant-in-Aid for Scientific Research 22H00304,” “New Energy and Industrial Technology Development Organization (NEDO),” “New Energy and Industrial Technology Development The project was supported by “JSPS Grant-in-Aid for Scientific Research 22H00304,” “New Energy and Industrial Technology Development Organization (NEDO),” and “JST Research Results Deployment Program: A-STEP Industry-Academia Collaboration (Full-scale) JPMJTR201D.
Reference
For details of the research, please refer to the Meijo University release.
高出力を可能にする縦型AlGaN系 深紫外（UV-B）半導体レーザー 世界で初めて開発
Translated by DeepL