The nonlinear-optical coefficients of RCOB(R=Gd,Y)crystals are measured.The spatial distribution of deff effective nonlinear-optical coefficient is determined subsequently.Our experiments show that the maximum deff oc...The nonlinear-optical coefficients of RCOB(R=Gd,Y)crystals are measured.The spatial distribution of deff effective nonlinear-optical coefficient is determined subsequently.Our experiments show that the maximum deff occurs at the second quadrant.The second-harmonic-generation efficiency reaches 48%for a 6 mm-long,(113.2°,47.4°)-cut GdCOB,and 41.5%for a 5mm-long,(113°,36.5°)-cut YCOB,respectively.The intracavity frequency doubling of GdCOB is reported for the first time.展开更多
RbTiOAsO_(4)(RTA)crystals of high optical quality were grown with flux method.The defects of RTA crystals are mainly growth striations,growth sector boundaries and sometimes ferroelectric domains.The refractive indice...RbTiOAsO_(4)(RTA)crystals of high optical quality were grown with flux method.The defects of RTA crystals are mainly growth striations,growth sector boundaries and sometimes ferroelectric domains.The refractive indices and electrooptic coefficients were measured together with dielectric constants,ionic conductivity and direct current resistivities.It is shown that RbTiOAsO_(4) is not only as good a nonlinear optical crystal as KTiOPO4 but also a superior electrooptic crystal.展开更多
A series of Nb doped KTP crystals are grown with seed Aux method and Hux pulling method.The results of our investigation on growth,morphology defects of the crystals are reported in this paper.We obtained the relation...A series of Nb doped KTP crystals are grown with seed Aux method and Hux pulling method.The results of our investigation on growth,morphology defects of the crystals are reported in this paper.We obtained the relationship between Nb contents and second-harmonic generation angles of the crystals.Noncritical phase matching has been realized by 4%Nb doped KTP crystal for Nd:YAG laser 1.06μm output.展开更多
基金Supported by the Key Program of the National Natural Science Foundation of China under Grant No.69890235the Key Program of Science and Technology Research of the Minis try of Education of China under Grant No.99182.
文摘The nonlinear-optical coefficients of RCOB(R=Gd,Y)crystals are measured.The spatial distribution of deff effective nonlinear-optical coefficient is determined subsequently.Our experiments show that the maximum deff occurs at the second quadrant.The second-harmonic-generation efficiency reaches 48%for a 6 mm-long,(113.2°,47.4°)-cut GdCOB,and 41.5%for a 5mm-long,(113°,36.5°)-cut YCOB,respectively.The intracavity frequency doubling of GdCOB is reported for the first time.
基金the National 863 High Technology Program of China。
文摘RbTiOAsO_(4)(RTA)crystals of high optical quality were grown with flux method.The defects of RTA crystals are mainly growth striations,growth sector boundaries and sometimes ferroelectric domains.The refractive indices and electrooptic coefficients were measured together with dielectric constants,ionic conductivity and direct current resistivities.It is shown that RbTiOAsO_(4) is not only as good a nonlinear optical crystal as KTiOPO4 but also a superior electrooptic crystal.
基金Supported by a grant for Research Project in Climbing Program from the Science and Technology Commission of China.
文摘A series of Nb doped KTP crystals are grown with seed Aux method and Hux pulling method.The results of our investigation on growth,morphology defects of the crystals are reported in this paper.We obtained the relationship between Nb contents and second-harmonic generation angles of the crystals.Noncritical phase matching has been realized by 4%Nb doped KTP crystal for Nd:YAG laser 1.06μm output.
