Info
Info
News Article

Could GeSn Laser Be Used For Computer Super Chip?

 Researchers make optically pumped GeSn laser using industry standard CVD reactor

A multi-institutional team of researchers, led by University of Arkansas engineering professor Shui-Qing "˜Fisher' Yu and semiconductor equipment manufacturer ASM America, have fabricated an optically pumped laser made of the alloy GeSn grown on silicon substrates.

According to the team, the augmented material could lead to the development of fully integrated silicon photonics, including both circuits and lasers, and thus faster micro-processing speed at much lower cost. The findings were published in Applied Physics Letters.

GeSn tin holds promise as a semiconducting material for future optical integration of computer chips, because it harnesses efficient emission of light. In recent years, materials scientists and engineers, including Yu and several of his colleagues on this project, have focused on the development of GeSn, grown on silicon substrates, to build a so-called optoelectronics 'super chip' that can transmit data much faster than current chips.

Yu and his colleagues' most recent contribution to this effort is an optically pumped laser using GeSn. 

"We reduced the laser threshold 80 percent at a lasing operation temperature up to 110 Kelvin," Yu said. "This is significant progress compared with the previously reported best result and shows that GeSn holds great promise as an on-chip laser."

On this project, Yu and his colleagues worked with ASM America Inc.'s research and development staff, who developed the growth methods. ASM's methods produce low-cost and high-quality GeSn in an industry standard CVD reactor.

In addition to Yu, the research team includes John Tolle, epitaxy research and development manager at ASM; Joe Margetis, epitaxy engineer at ASM; Hameed Naseem, professor of electrical engineering at the University of Arkansas; Mansour Mortazavi, professor of chemistry at the University of Arkansas at Pine Bluff; Wei Du, professor of physics at the University of Arkansas at Pine Bluff; Baohua Li, CEO of Arktonics LLC; Jifeng Liu, professor of engineering at Dartmouth College; and Richard Soref and Greg Sun, professors of engineering at the University of Massachusetts Boston.

The University of Arkansas' researchers are supported by the US Air Force Office of Scientific Research and the US National Science Foundation.



AngelTech Live III: Join us on 12 April 2021!

AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST) and will feature online versions of the market-leading physical events: CS International and PIC International PLUS a brand new Silicon Semiconductor International Track!

Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.

2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.

We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.

We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.

Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.

Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.

So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.

REGISTER FOR FREE

VIEW SESSIONS

Info
×
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:
 
X
Info
X
Info
{taasPodcastNotification}
Live Event