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Co-crystal LiCl·(H3C3N3O3): a promising solar-blind nonlinear optical crystal with giant nonlinearity from coplanar
Fei Liang1, Naizheng Wang, Xiaomeng Liu
1Center for Crystal Research and Development, Key Lab Functional Crystals and Laser Technology of Chinese Academy of Sciences, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China. zslin@mail.ipc.ac.cn.
Abstract:
Compact and reliable all-solid-state solar-blind lasers based on nonlinear optical conversion are opening the door to new industrial applications of lasers. Herein, we proposed the cyanuric acid molecule, benefiting from its wide band gap, considerable optical anisotropy, and strong binding interaction resulting from hydrogen bonds, to be a superior building block for solar-blind NLO crystals. Taking the co-crystal LiCl·(H3C3N3O3) as an example, our first-principles studies predicted this crystal to display a short UV transparent edge of 215 nm, strong optical anisotropy (Δn ∼ 0.28), and a second-order coefficient (d22 = 4.15 pm V-1) greater than those of all other investigated solar-blind NLO crystals.
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