Chinese Optics Letters, 2012, 10 (4): 041602, Published Online: Jan. 5, 2012
Measurement of the linear electro-optic tensor of cubic boron nitride single crystals Download: 569次
160.2100 Electro-optical materials 160.4760 Optical properties 190.4400 Nonlinear optics, materials 190.4720 Optical nonlinearities of condensed matter
Abstract
The transverse electro-optic (EO) modulation system is built based on cubic boron nitride (cBN) single crystals unintentionally doped and synthesized at a high pressure and high temperature. The photoelectric output of the system includes two parts that can be measured respectively and the value of elements in the linear EO tensor of the cBN crystal can be obtained. This method does not need to measure the absolute light intensity. All of the surfaces of the tiny cBN crystals whose hardness is next to the hardest diamonds are {111} planes. The rectangular parallelepiped cBN samples are obtained by cleaving along {110} planes and subsequently grinding and polishing f112g planes of the tiny octahedral cBN flakes. Three identical non-zero elements of the EO tensor of the cBN crystal are measured via two sample configurations, and the measured results are very close, about 3.68 and 3.95 pm/V, respectively, which are larger than the linear EO coefficients of the general III-V compounds.
Shuang Wang, Gang Jia, Xiuhuan Liu, Shipeng Chi, Jingcheng Zhu, Yanjun Gao, Pingwei Zhou, Zhanguo Chen. Measurement of the linear electro-optic tensor of cubic boron nitride single crystals[J]. Chinese Optics Letters, 2012, 10(4): 041602.