CAJ | 학술논문

应用气相传输平衡技术,我们获得了3种近化学计量比掺镁铌酸锂晶体,晶体的掺镁量接近我们以前提出的第二阈值.在我们实验室所能达到的最大光强26 MW/cm2照射下,在所有近化学计量比掺镁铌酸锂晶片中没有观察到光斑畸变,该光强比同成分铌酸锂晶体所能承受的光强高6个量级,为目前已报道的铌酸锂晶体之最.应用双光束全息写入法测得掺1.0 mol% Mg近化学计量比铌酸锂晶体的光折变饱和值仅有4.6×10-7,比同成分铌酸锂晶体小两个量级,从已有实验数据推测,该晶体的抗光折变能力应当比同成分铌酸锂晶体高9个量级以上.
응용기상전수평형기술,아문획득료3충근화학계량비참미니산리정체,정체적참미량접근아문이전제출적제이역치.재아문실험실소능체도적최대광강26 MW/cm2조사하,재소유근화학계량비참미니산리정편중몰유관찰도광반기변,해광강비동성분니산리정체소능승수적광강고6개량급,위목전이보도적니산리정체지최.응용쌍광속전식사입법측득참1.0 mol% Mg근화학계량비니산리정체적광절변포화치부유4.6×10-7,비동성분니산리정체소량개량급,종이유실험수거추측,해정체적항광절변능력응당비동성분니산리정체고9개량급이상.
With the help of vapor transport equilibrium technique, we obtained three near stoichiometric lithium niobate crystals with the doping concentration of Mg near the second threshold. These crystals show, up to now, the best resistant ability against laser induced optical damage:no laser beam distortion was observed under a light intensity of 26 MW/cm2, and only a Δn of 4.6×10-7 was measured by two-beam holographic recording.