Multi-junction and tandem photovoltaic (PV) cells are developed to overcome the single-junction Shockley–Queisser (SQ) limit. Spectral splitting is the key to achieve high conversion efficiencies in these cells. In a typical tandem solar cell, the incident light is spectrally splitted between the upper and lower cells. Through an intelligent selection of materials, the number of layers, and the design of an efficient optical cavity, photons from the entire solar spectrum can be efficiently harvested.
Due to the significant infrared transparency of silicon and refractive index difference between silicon and silica, silicon-on-silica optical waveguides have unique optical features.
In a study published in Optics Express, a research group led by ZHANG Xuejun from Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) of the Chinese Academy of Sciences (CAS) proposed a new strategy of improving the instrumental transfer function (ITF) of the CGH interferometric null test.
After nearly 20 years of hard work and a series of technical breakthroughs, scientists led by ZHANG Xuejun from Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) of the Chinese Academy of Sciences (CAS) have successfully created the world’s largest SiC aspheric mirror, which boasts an impressive diameter of 4 meters.
The NOT-NOR (NOR) logic gate is a general-purpose gate that is employed to create any logic operation, build combinational logic circuits, manage packet contention, and monitor bit error rate.
Due to their significance in several applications, including optical networks, optical random memory, and photonic encryption/decryption, optical latches have garnered academic attention.
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