【摘要】 采用提拉法生长出掺铒氟化钆锂(Er3+:LiGdF4,Er:LGF)激光晶体。晶体生长工艺参数为:提拉速率为0.16mm/h,晶体转速为3r/min,冷却速率为10℃/h。X射线粉末衍射分析表明:晶体属于四方晶系,白钨矿结构,空间群为I41/a,计算的晶胞参数:a=0.5196nm,c=1.10286nm。晶体的吸收光谱和荧光光谱表明:晶体在659,980nm和1540nm附近的吸收峰较强,其中在1540nm处的吸收截面为1.09×10-20cm2。在激光二极管的532nm波长泵浦下,发射峰分别位于995nm和1530nm附近,其中1530nm处的半高宽为52nm。更多还原

【Abstract】 Er3+:LiGdF4(Er:GLF) single crystal was grown by Czochralski method.Its optimal process parameters are as follows:a pulling rate of 0.16 mm/h,a rotation rate of 3 r/min,and a cooling speed of 10 ℃/h.The result of X-ray diffraction shows that as-grown Er:LGF crystal belongs to the tetragonal system with scheelite-type structure and a space group of I41/a.The cell parameters calculated are a = 0.519 6 nm and c = 1.102 86 nm.The absorption and fluorescence spectra of Er:LGF crystal were measured.There are three intensive absorption peaks near 1 540,980,and 659 nm,and the absorption cross-section at 1 540 nm is 1.09 × 10-20 cm2.Two obvious emission peaks at around 995 and 1 530 nm can be observed under laser diode pumping with a wavelength of 532 nm.The full width at half maximum at about 1 530 nm is 52 nm.更多还原