title: Synthesis and nonlinear optical properties of single-crystalline KNb3O8 nanowires.
abstract: Single-crystalline KNb(3)O(8) nanowires with widths of 100-300 nm and lengths up to tens of microns were synthesized by calcining Nb(2)O(5) powders in molten KCl and K(2)SO(4). The phase of the products was determined by means of x-ray diffraction, and the morphology and structure were characterized by using scanning electron microscopy, transmission electron microscopy, high resolution transmission electron microscopy and selected area electron diffraction techniques. The growth direction of the KNb(3)O(8) obtained was determined to be the [001] crystallographic direction. Meanwhile, the polarization response of the second-harmonic generation (SHG) response was investigated. The as-synthesized nanowires clearly exhibited a SHG response, which means that the nanowires were an efficient nanoscale second-harmonic light source. The excellent nonlinear optical property of KNb(3)O(8) shows potential for application in nano-optical devices.
authors: Key Laboratory of Optoelectronic Devices and Systems of the Ministry of Education and Guangdong Province, Shenzhen University, Shenzhen 518060, People's Republic of China.
authors: Bin
authors: B
authors: Yu
authors: Bo
authors: B
authors: Cao
authors: Huiqun
authors: H
authors: Cao
authors: Xinpeng
authors: X
authors: Zhang
authors: Danni
authors: D
authors: Chen
authors: Junle
authors: J
authors: Qu
authors: Hanben
authors: H
authors: Niu