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

CST publishes findings of CoolBlue project


Single wavelength, blue laser diode offers increased power, lower complexity and smaller size

Thomas Slight, Research Engineer at CST Global, has successfully published his research paper covering next-generation, GaN, DFB laser diodes in the Applied Physics Express (APEX) letters journal. APEX reports on new findings in applied physics and is affiliated with the Institute of Physics (IoP).

Slight’s paper, ‘Continuous-wave operation of (Al,In)GaN distributed-feedback laser diodes with high-order notched gratings’, summarises the findings of the government-funded, “Quantum Cooling using Mode Controlled Blue Lasers” project, known as CoolBlue.

The paper reports on the continuous-wave, room-temperature operation of distributed feedback laser diodes (DFB-LD) with high-order notched gratings. It covers the design, fabrication and characterisation of the DFB devices, which are based on the (Al,In)GaN material system.

Slight explains: “The single wavelength, blue laser diode source, developed in the project, offered increased power, lower complexity and smaller size over conventional laser sources. The paper shows it is possible to transform quantum sensors from laboratory instruments into miniaturised, robust systems, for a far wider range of commercial applications. In practice, these are associated with ultra-cold, atom-based, quantum sensing systems, such as atomic clocks.”

Connecting the Compound Semiconductor Industry

The 13th CS International conference builds on the strengths of its predecessors, with around 40 leaders from industry and academia delivering presentations that fall within five key themes: Ultrafast Communication; Making Headway with the MicroLED; Taking the Power from Silicon, New Vectors for the VCSEL, and Ultra-wide Bandgap Devices.

Delegates attending these sessions will gain insight into device technology, find out about the current status and the roadmap for the compound semiconductor industry, and discover the latest advances in tools and processes that will drive up fab yields and throughputs.

To discover our sponsorship and exhibition opportunities, contact us at:

Email: info@csinternational.net
Phone: +44 (0)24 7671 8970

To register your place as a delegate, visit: https://csinternational.net/register

Search the news archive

To close this popup you can press escape or click the close icon.
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: