+44 (0)24 7671 8970
More publications     •     Advertise with us     •     Contact us
News Article

Nichia’s Green Laser Diode Reaches 515 Nm

Nichia has produced individual 515 nm continuous-wave laser diodes, crashing past the 500 nm mark, which was previously the longest wavelength reached by electrically driven InGaN lasers.

The Japanese GaN pioneer did not provide reliability data for the 515 nm devices, but it also produced 510–513 nm diodes that operate for 500 hours without a change in their electrical characteristics. Beyond 500 hours the lasers’ performance steadily degraded. The Nichia researchers estimated their overall lifetime – which is defined as ending when operating current increases by 30% from its initial value – to be 5000 hours.

In an Applied Physics Express paper published on May 22, the team developing the lasers reported a separate confinement heterostructure diode “almost the same as" a design dating back to 2001. Optimized MOCVD processes are critical to producing the high-indium-content material required to access green wavelengths on a free- standing c-plane GaN substrate.

“We improved the growth condition of epitaxial layers," the Nichia team wrote. “The crystal quality was improved even in indium- rich InGaN active layers."

CS International to return to Brussels – bigger and better than ever!


The leading global compound semiconductor conference and exhibition will once again bring together key players from across the value chain for two-days of strategic technical sessions, dynamic talks and unrivalled networking opportunities.


Join us face-to-face between 28th – 29th June 2022

  • View the agenda.
  • 3 for the price of 1. Register your place and gain complementary access to TWO FURTHER industry leading conferences: PIC International and SSI International.
  • Email info@csinternational.net  or call +44 (0)24 7671 8970 for more details.

*90% of exhibition space has gone - book your booth before it’s too late!

Register


×
Search the news archive

To close this popup you can press escape or click the close icon.
×
Logo
×
Register - Step 1

You may choose to subscribe to the Compound Semiconductor Magazine, the Compound Semiconductor Newsletter, or both. You may also request additional information if required, before submitting your application.


Please subscribe me to:

 

You chose the industry type of "Other"

Please enter the industry that you work in:
Please enter the industry that you work in: