#  Visible Lithium Niobate Photonics 

 



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Integrated photonics is a powerful platform for providing high-performace optical system with the good stability, low cost, and small footprint. With the stimulation of a wide range of applications in visible wavelength, such as optical imaging, optogenetics, and quantum science and technology, our group are pushing thin-flim lithium niobate into the visible wavelength.

**Ultra-low-loss integrated visible photonic on thin-film lithium niobate \[Boris Desiatov, et al. Optica 6, 380 (2019)\]:** We demonstrate an ultralow-loss integrated visible photonics platform, featuring a ultra-low propagation loss of 6 dB/m, an intrinsic quality factor of 11 million of micro-ring resonator, both at 637 nm wavelength. Additionally, we demonstrate an visible modulator with an electro-optic bandwidth of 10 GHz, limited by the detector used.

   ![visible ln1](/sites/g/files/omnuum6446/files/styles/hwp_1_1__720x720_scale/public/nano-optics/files/6666123123.png?itok=gf7VO7J5)