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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...
As one of the important means of transportation in modern society, the safety and performance of aircraft have always been the focus of attention. Behind the continuous pursuit of technological breakthroughs in the aviation industry, carbon fiber materials, as a lightweight and high-strength material, are gradually emerging in the application of aircraft fuselage.Combined with the application of ...
Recently, Longi Green Energy Technology Co., Ltd. (hereinafter referred to as "Longi"), as the first unit, published a research paper titled "Silicon heterojunction back contact solar cells by laser patterning" online in the journal Nature, reporting for the first time the research results of breaking through 27% of the photoelectric conversion efficiency of crystalline silicon cells through full ...
On March 28th, Marvel Fusion, a laser fusion company from Munich, Germany, announced the completion of a B+round financing of 50 million euros, bringing the total amount of this round of financing to 113 million euros. It is reported that the company's cumulative financing has reached 385 million euros, making it the largest fusion company in Europe in terms of financing scale. This capital incr...
The femtosecond laser emits ultra short optical pulses with a duration of less than one picosecond, reaching the femtosecond level (1fs=10-15s). The characteristics of femtosecond laser are extremely short pulse width and high peak intensity.Ultra short pulse trains can minimize residual heat, ensure precise material processing, and minimize incidental damage. Its high peak intensity can induce no...