Abstract
The strength of interactions between photons in a χ(2) nonlinear optical waveguide increases at shorter wavelengths. These larger interactions enable coherent spectral translation and light generation at a lower power, over a broader bandwidth, and in a smaller device: all of which open the door to new technologies spanning fields from classical to quantum optics. Stronger interactions may also grant access to new regimes of quantum optics to be explored at the few-photon level. One promising platform that could enable these advances is thin-film lithium niobate (TFLN), due to its broad optical transparency window and possibility for quasi-phase matching and dispersion engineering. In this Letter, we demonstrate second harmonic generation of blue light on an integrated thin-film lithium niobate waveguide and observe a conversion efficiency of η0 = 33, 000%/W-cm2, significantly exceeding previous demonstrations.
© 2022 Optica Publishing Group
Full Article | PDF ArticleMore Like This
Xiaoyue Liu, Chi Zhang, Ying Pan, Rui Ma, Xian Zhang, Mengwen Chen, Lin Liu, Zhenda Xie, Shining Zhu, Siyuan Yu, and Xinlun Cai
Opt. Lett. 47(19) 4921-4924 (2022)
Haoyang Du, Xiuquan Zhang, Hengyue Lv, Jintian Lin, Lei Wang, and Feng Chen
Opt. Lett. 49(2) 391-394 (2024)
You Wu, Junjie Wei, Cheng Zeng, and Jinsong Xia
Opt. Lett. 49(10) 2833-2836 (2024)