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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...
The latest research led by the University of Surrey shows that alumina (Al2O3) nanoparticles can significantly enhance the lifespan and stability of perovskite solar cells, extending the service life of such high-efficiency energy devices tenfold.Although perovskite solar cells have advantages such as low cost and light weight compared to traditional silicon-based technologies, their commercial po...
Laser is considered a sharp sword that cuts iron like mud, but even sharper swords can have tricky moments. For example, in certain scenarios, there are materials with higher reflectivity, such as silver, copper, etc., known as "high reflection materials". High reflective materials have a low absorption rate for lasers, making them difficult to process and potentially causing equipment failure or ...
Recently, the Research Group of Nonlinear Photonics Technology and Applications in the State Key Laboratory of Transient Optics and Photonics Technology of Xi'an Institute of Optics and Fine Mechanics has made important progress in the field of super surface nonlinear photonics. Relevant research results were published in the internationally famous journal Nanoscale Horizons. The first author of t...
Dark solitons - the extinction region in a bright background - spontaneously form in a ring semiconductor laser. Observations conducted by an international research group may lead to improvements in molecular spectroscopy and integrated optoelectronics.Frequency comb - a pulse laser that outputs light at equidistant frequencies - is one of the most important achievements in the history of laser ph...