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

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.”

CS International 26-27 March 2019, Sheraton Airport Hotel, Brussels

In its ninth year, CS International will continue to provide timely, comprehensive coverage of every important sector within the compound semiconductor industry. Presentations are split into 5 key themes and each industry key theme will be delivered by a keynote presentation from a leading industry figure as well as a market analyst presentation tailored to the theme. Together, the talks will detail breakthroughs in device technology; offer insights into the current status and the evolution of compound semiconductor devices; and provide details of advances in tools and processes that will help to drive up fab yields and throughputs. Attendees at the two-day conference will gain an up-to-date overview of the status of the CS industry, and have opportunities to meet many other key players within this community.

Places will be limited, so register your place today:

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: