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A team of computer and electrical engineers at UC Santa Barbara, in collaboration with several colleagues at Caltech and another colleague at Anello Photonics, has developed a first-of-its-kind chip that can carry both laser and photonic waveguides. In a paper published in the journal Nature, the team describes how they made the chip and how it worked during testing.With the advent of integrated c...
The time/frequency unit is the most accurate among the seven basic units, so many measurement studies that pursue ultra-high accuracy and sensitivity will be transformed into frequency measurements to achieve higher measurement accuracy and sensitivity. For example, by measuring the relative changes in the ratio of different atomic transition frequencies, ultralight dark matter can be detected or ...
Scientists are exploring new ways to get around limitations on the lithography machines used to produce microchips. Researchers are using particle accelerators to create new laser sources that could lay the foundation for the future of semiconductor manufacturing.Plans are underway to build a particle accelerator with a circumference between 100 and 150 meters (328 and 492 feet), about the size of...
The new device is a frequency comb - a special type of laser that can generate multiple wavelengths of light, each with a fixed frequency interval. On the spectrogram, it looks a bit like the teeth of a comb. In approximately a quarter century since their first development, these "cursor rulers" have completely transformed various high-precision measurements from timing to molecular detection. In ...
A research team in Japan has designed a flexible and shapable X-ray reflector, achieving significant accuracy and higher stability at the atomic level.This new technology, developed by Satoshi Matsuyama and Takato Inoue from the Graduate School of Engineering at Nagoya University, in collaboration with the Japanese Institute of Physical and Chemical Research and JTEC Corporation, improves the perf...