四倍频磷酸二氘钾晶体  

Fourth harmonic generation of DKDP crystal

作　　者：纪少华[1] 张少军[1] 徐明霞[1] 刘宝安[1] 朱丽丽[1] 张立松[1] 许心光[1] 王正平[1] 孙洵[1] 

机构地区：[1]山东大学晶体材料国家重点实验室,济南250100

出　　处：《强激光与粒子束》2012年第6期1406-1408,共3页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(60978027;61178060);山东省自然科学基金项目(2009ZRB01907;ZR2010EM001);教育部新世纪人才项目计划(NCET-10-0526)

摘　　要：生长了不同氘含量的磷酸二氘钾(DKDP)晶体,切割角度统一沿Ⅰ类非临界相位匹配方向,即与晶体z轴成90°与x轴成45°,分别在1 064nm和1 053nm两种基频波长下进行了四倍频实验,通过测定氘含量与相位匹配角的联系,确定出能够实现非临界四倍频的DKDP晶体的最佳氘含量。实验发现在1 064nm的基频波长下通过调节DKDP晶体的氘含量无法实现室温的非临界相位匹配,而在1 053nm基频波长下实现室温的非临界相位匹配的DKDP晶体最佳氘含量为85%左右。Deuterated dihydrogen phosphate（DKDP） crystals of different deuterium contents were cut for type-I non-critical phase-matching with the direction at 90° to the crystal z axis and at 45° to the crystal x axis,and then measured in the fourth harmonic generation experiments with fundamental wavelengths of 1 064 nm and 1 053 nm,respectively.The optimum deuterium content of DKDP crystal was confirmed by measuring the relation between deuterium content and phase-matching angle.The results indicate that DKDP crystal can not achieve non-critical phase matching by adjusting its deuterium content at room temperature with the fundamental wavelength of 1 064 nm.However,at the fundamental wavelength of 1 053 nm,the optimum deuterium content of DKDP crystal is 85%,to achieve non-critical phase matching at room temperature.

关 键 词：磷酸二氘钾 四倍频 非临界相位匹配 氘含量 

分 类 号：O782.1[理学—晶体学]