Asahi Kasei: Oscillates the world’s shortest wavelength UV-C laser: Crystal IS / AlN substrate
Expand application to healthcare and measurement / analysis sensing
November 5, 2019
Asahi Kasei / Nagoya University
The research group of Nagoya University and Professor Hiroshi Amano has been working with Asahi Kasei on joint research into deep ultraviolet (UV-C) * 1 semiconductor lasers.
This time, we succeeded in the world’s shortest wavelength laser oscillation (271.8nm) using the “room temperature pulse current injection method * 2” using an aluminum nitride (AlN) substrate.
This UV-C laser diode: Crystal IS / AlN substrate
We use AlN substrates manufactured by Crystal IS (a group company of Asahi Kasei).
Crystal IS’s AlN substrate features a low defect density of 2 inches and a level of 103 / cm2, making a major contribution to the UV-C laser oscillation.
So far, semiconductor lasers only have an oscillation wavelength of 336 nm, and this result has opened the way to shortening the wavelength to the UV-C band for the first time in the world.
Future fields of use:
If a semiconductor laser in the UV-C wavelength band can be realized,
Application to sensing such as gas analysis,
Topical sterilization,
Measurement and analysis of DNA and fine particles,
Applications in the healthcare and medical fields are expected.
This research result was published in Applied Physics Express online version dated October 30, 2019.
Press Release | Asahi Kasei Corporation
https://www.asahi-kasei.co.jp/asahi/jp/news/2019/ze191105.html