Efficient sum-frequency generation of a yellow laser in a thin-film lithium niobate waveguide
You Wu, Junjie Wei, Cheng Zeng, Jinsong Xia
Abstract
Yellow lasers with high efficiency and tunability play an essential role in many applications. Here, we demonstrate the sum-frequency generation (SFG) of yellow light on a periodically poled thin-film lithium niobate (PP-TFLN) waveguide. Taking advantage of large χ (2) nonlinearity, a high normalized conversion efficiency of 10,097% (W·cm 2 ) is obtained with pump wavelengths of 1317.7 and 1064 nm. An absolute conversion efficiency of 24.17% is recorded with on-chip pump powers of 10.4 dBm (O-band) and 13.5 dBm (1064 nm).
Topics & Concepts
Lithium niobateMaterials scienceOpticsLaserEnergy conversion efficiencySum-frequency generationWaveguideThin filmSecond-harmonic generationOptoelectronicsWavelengthNonlinear opticsNanotechnologyPhysicsPhotorefractive and Nonlinear OpticsAdvanced Fiber Laser TechnologiesPhotonic and Optical Devices