Uniting the Light Spectrum on a Chip

Focused laser-like light that covers a wide range of frequencies is highly desirable for many scientific studies and for many applications, for instance quality control of manufacturing semiconductor electronic chips. But creating such broadband and coherent light has been difficult to achieve with anything but bulky energy-hungry tabletop devices. Now, a Caltech team led by Alireza Marandi, a professor of electrical engineering and applied physics at Caltech, has created a tiny device capable of producing an unusually wide range of laser-light […]


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