Thin-film lithium-niobate-on-insulator modulators at a wavelength of 1064nm for high-power applications

Optical signals at 1064 nm have great applications in laser ranging, altimetry, and atmosphere remote sensing areas. However, electro-optic modulator at 1064 nm, as the key device for electro and optic signal conversion, has not been studied. Here we design a 1064 nm electro-optic modulator on the thin-film lithium niobate (LN) using two Mach-Zehnder interferometers connected in parallel. The fabricated device exhibits a voltage-length product of 1.92 V·cm and a 3-dB-bandwidth of around 5 GHz (theoretical > 120 GHz) which is limited by the photodetector available in the lab.