Microring Optical Parametric Oscillator (IMAGE)

Optica

Microring Optical Parametric Oscillator

Caption

Efficient optical parametric oscillation occurs in a microring (central light blue ring) on a silicon chip, so that an infrared laser (900-nanometer wavelength, depicted in green) coupled into the ring is transformed into light in both the visible (700-nanometer wavelength, depicted in red) and telecom (1300-nanometer wavelength, depicted in blue).

Credit

Xiyuan Lu, NIST/University of Maryland, inspired by the "Olympic rings."

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