Linear and nonlinear optical characteristics effected by Na+ ions of low concentration for potassium dihydrogen phosphate crystal

Wang, Yude; Sun, Defu; Chen, Jialin; Shen, Chuanying; Liu, Guangxia; Wang, Duanliang; Wang, Shenglai

doi:10.1016/j.ijleo.2021.168481

Cited by 9 publications

(1 citation statement)

References 34 publications

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“…7 shows the anisotropy of NLA coefficient in the different cut direction. Such an anisotropic feature is mainly attributed to the distribution of D 2 PO 4 − groups, which play a great part in nonlinear optical properties [32].…”

Section: Resultsmentioning

confidence: 99%

Research on the Nonlinear Absorption Coefficient of 98% Deuterated DKDP Crystal at Fourth-Harmonic-Generation Wavelength

Zhang

et al. 2022

Front. Phys.

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A series of 98% deuterated DKDP crystals were grown in solutions with different pD values (2.9, 3.3, 3.8, and 4.3) using the rapid growth method. Samples were cut along the z-direction and fourth-harmonic-generation (FHG) direction which contained both pyramidal and prismatic regions. The nonlinear absorption (NLA) coefficient β of 98% deuterated DKDP crystals was obtained using the Z-scan method operated at the FHG wavelength (266 nm) of a picosecond Nd:YAG laser. According to the results, the nonlinear absorption at 266 nm could be identified as two-photon absorption. The β values of crystal grown in the solution with 3.3 pD value were higher than those of crystals grown in solutions with other pD values under higher laser fluence. The results also indicated that FHG device samples should be prepared from the pyramidal region due to its lower β value. This work will help optimizing the application of 98% DKDP crystals as FHG elements in high-power laser systems.

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Section: Resultsmentioning

confidence: 99%