Fig. 5: Comb spectral translation from near-IR to visible. | Light: Science & Applications

Fig. 5: Comb spectral translation from near-IR to visible.

From: Soliton formation and spectral translation into visible on CMOS-compatible 4H-silicon-carbide-on-insulator platform

Fig. 5: Comb spectral translation from near-IR to visible.The alternative text for this image may have been generated using AI.

a Schematic of the comb spectral translation through second- and third-order nonlinearities in the 4H-SiC microresonator. FWM four-wave mixing, SFG sum-frequency generation. The optical image shows the frequency-doubled pump scattered from the microresonator. b A resonance profile at 787.5 nm with a Lorentzian fit showing a linewidth of 730 MHz, corresponding to loaded Q factor of 5.26 × 105. c, d Optical spectra of the near-IR and visible combs with different frequency detuning

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