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Rydberg atoms and molecules are characterized by having one or more electrons in highly excited bound states. Such atoms and molecules are said to be in “Rydberg states” and are also called “hollow” atoms and molecules. Rydberg states are useful for studying various phenomena arising in intense light–matter interaction that involve electronic excitation with an intens...
Recently, Sivers Semiconductors, a leading supplier of integrated chips and photonics modules for communication and sensing solutions, announced a significant strategic initiative:It will divest its subsidiary Sivers Photonics Ltd, which has signed a non binding letter of intent (LOI) with byNordic Acquisition Corporation and plans to achieve independent listing through a merger. This move aims ...
Super-resolution fluorescence microscopy surpasses the diffraction limit of what used to be a barrier by using fluorescent probes and specific excitation and emission programs. Most SR technologies heavily rely on image computation and processing to retrieve SR information. However, factors such as fluorescence group photophysics, chemical environment of the sample, and optical settings may cause ...
Scientists at the City University of New York use tiny nitrogen defects in the atomic structure of diamonds as "color centers" to write data for storage. This technology is published in the journal Nature Nanotechnology and allows for encoding multiple bytes of data into the same nitrogen defect at multiple optical frequencies, without confusing the information content.The common laser based techn...
The pump source, gain material, and resonant cavity are the three elements that make up a laser. Due to the selective effect of the resonant cavity on the lasing frequency, multi longitudinal mode operation is one of the characteristics of fiber lasers based on traditional resonant cavity structures, manifested as periodic beat peaks in the radio frequency (RF) spectrum and periodic fluctuations i...