CAJ | 학술논문

采用离子交换结合氢气热处理方法,制备出银铜双金属纳米晶玻璃复合材料。利用光学吸收谱,光克尔技术和泵浦探测技术研究了银铜纳米晶玻璃复合材料的线性和三阶非线性光学性能。结果表明,在400nm银的表面等离子共振吸收峰附近,测得复合材料的三阶非线性极化率为1.7×10-9esu,光响应时间为皮秒级;在800nm处泵浦探测结果表明,银铜纳米颗粒尺寸增大使得复合玻璃材料快过程时间缩短和慢过程时间延长。
채용리자교환결합경기열처리방법,제비출은동쌍금속납미정파리복합재료。이용광학흡수보,광극이기술화빙포탐측기술연구료은동납미정파리복합재료적선성화삼계비선성광학성능。결과표명,재400nm은적표면등리자공진흡수봉부근,측득복합재료적삼계비선성겁화솔위1.7×10-9esu,광향응시간위피초급;재800nm처빙포탐측결과표명,은동납미과립척촌증대사득복합파리재료쾌과정시간축단화만과정시간연장。
Ag-Cu nanoparticles glass composite materials were prepared by ion-exchange and subsequently thermal treatment method in H2 atmosphere. Optical absorption spectroscopy, optical Kerr effect and pump-probe techniques were used to measure linear and third-order optical nonlinear properties of the composite materials. The results indicate that the third-order susceptibility is 1.7×10^-9 esu by 400 nm pulse source while the optical response time is several picoseconds with Ag-Cu nanoparticles embedding in silicate glass. By 800 nm pumpprobe techniques, the time constant of the fast component accelerates while the time constant of the slow component decelerates due to Ag-Cu nanoparticle size increasing.