A mechanical shutter enabled carrying out irradiation cycles, which from the experiments in this article reported experienced 1 s period and a pair of s dim time separation. The probe beam originates from a reduced-electrical power He-Ne laser (λ�?�?33 nm) concentrated to a midsection of 20 µm and counter propagating https://lithium-niobate-crystal13457.angelinsblog.com/31723012/an-unbiased-view-of-lithium-niobate-crystal