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本文利用单束、波长对应金纳米棒长轴表面等离子共振的飞秒脉冲激光对多个长度为40 nm,直径为10 nm的金纳米棒颗粒进行了光捕获,系统研究了金纳米棒颗粒在共振激光作用下的双光子荧光及光致热熔合效应.实验结果表明,在光阱捕获过程中金纳米棒颗粒会激发出明显的双光子荧光.当多个金纳米棒被光力捕获在光斑中心时,金纳米棒发生热熔化并熔合成大尺寸的金纳米团簇.利用这种单光束光镊熔合技术,我们在玻璃衬底上制备了二维有序的金纳米团簇阵列.这一研究对利用金纳米棒颗粒来制备微纳光子结构及多功能光子器件等具有重要的指导意义.
In this paper, single-wavelength, long-wavelength surface plasmon resonance of femtosecond pulsed laser with wavelength of about 20 nm was used to capture a number of gold nanorods with a length of 40 nm and a diameter of 10 nm. The effects of gold nanorods on Two-photon fluorescence and photo-thermal fusion effect under the resonance laser.The experimental results show that the gold nanorod particles can emit obvious two-photon fluorescence during the optical trap capture.When a plurality of gold nanorods are captured by the light force in the light spot At the center, the gold nanorods are melted and fuse into large-size gold nanoclusters, and by this single-beam optical tweezers fusion technique, we fabricate a two-dimensionally ordered gold nanocluster array on a glass substrate. A study on the use of gold nanorods particles for the preparation of micro-nano photonic structures and multi-functional photonic devices have important guiding significance.