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Us researchers report 8.1 μm wavelength quantum cascade laser (QCL) grown on silicon (Si) by MOCVD [S. Xu et al., Applications. Physics Letters, v123, p031110, 2023]. "There are no previous reports of QCL growth on silicon substrates by metal-organic chemical vapor deposition (MOCVD)," commented the team from the University of Wisconsin-Madison, the University of Illinois at Urbana-Champaign an...
Figure 1. The setup of Hui Zhao and his team at the University of Kansas Ultra Fast Laser Laboratory.A team of researchers from the University of Kansas's ultrafast laser laboratory recently managed to capture real-time ballistic transmission of electrons in graphene, which could lead to faster, more powerful, and more energy-efficient electronic devices in the future.The motion of electrons is of...
Recently, four research groups from the University of Science and Technology of China, namely Yao Hongbin, Fan Fengjia, Lin Yue, and Hu Wei, have collaborated to make significant progress in the field of pure red perovskite light-emitting diodes (LEDs). The team independently invented the Electrical Excitation Transient Spectroscopy (EETA) technology and used it to reveal that hole leakage is the ...
Every year, Shanghai is lit up with a “feast of light”, that is LASER World of PHOTONICS CHINA, which has lasted for 20 years and become an arena for global photoelectric enterprises to display and compete, instead of just an exhibition hall of devices. Chanelink team visited all these halls for laser technology, thoroughly learning the cutting-edge trends in photoelectric industry.As a technical...
Gallium nitride (GaN) vertical cavity surface emitting laser (VCSEL) is a semiconductor laser diode with broad application prospects in various fields such as adaptive headlights, retinal scanning displays, nursing point testing systems, and high-speed visible light communication systems. Their high efficiency and low manufacturing costs make them particularly attractive in these applications.Gall...