KLN单晶的SHG特性  

Characterization of SHG Properties of Potassium Lithium Niobate (KLN) Single Crystals

作　　者：LIAN Li 1, T.C.Chong 1, YU Yong hei 2, H.Kumagai 3, M.Hirano 3(1.Data Storage Institute,DSI building,5 Engineering Drive 1 (off Kent Ridge Cre scent,NUS),Singapore 117608,Singapore 2.Singapore Productivity and Standards Boa rd,1 Science park drive 

出　　处：《人工晶体学报》2000年第S1期200-,共1页Journal of Synthetic Crystals

摘　　要：Tetragonal tungsten bronze structure potassium lithium niobate (KLN) crystals pr omise as a potentially useful material for nonlinear optical applications,especi ally,for blue laser radiation by second harmonic generation (SHG).We have grown KLN single crystals by TSSG method using different melt compositions and studied the properties of second harmonic generation (SHG).The crystals have the conten ts of Nb 2O 5 in the range of 51 54% and Li 2O in the range of 17.5 20% and a non critical SHG phase matching wavelength being a wide range from 843 and 9 67 nm. The dependence of temperature and SHG phase match wavelength and the temp erature acceptance were measured by a cw Ti∶Al 2O 3 laser(Spectra Physics M odel 3900S).The results show a linear relationship between phase match wavelengt h and temperature and a about 4℃ temperature acceptance.The homogeneity on a KL N crystal sample of 4×5×8mm was characterized where the SHG phase match wavele ngth changed within 887.8 and 887.5nm . With comparing the wavelength accepta nce being 0.5nm,the result suggests that the homogeneity is good. The dependence bet ween crystal composition,crystal lattice constants and SHG properties will be di scussed.Tetragonal tungsten bronze structure potassium lithium niobate (KLN) crystals pr omise as a potentially useful material for nonlinear optical applications,especi ally,for blue laser radiation by second harmonic generation (SHG).We have grown KLN single crystals by TSSG method using different melt compositions and studied the properties of second harmonic generation (SHG).The crystals have the conten ts of Nb 2O 5 in the range of 51 54% and Li 2O in the range of 17.5 20% and a non critical SHG phase...

关 键 词：potassium lithium niobate crystal second harmonic g eneration PROPERTY TSSG method 

分 类 号：O7[理学—晶体学]