Mercado-Zúñiga C, Vargas-García J R, Cervantes-Sodi F, Trejo-Valdez M, Torres-Martínez R, Torres-Torres C
Depto. Ing. Metalurgia y Materiales, ESIQIE, Instituto Politécnico Nacional, D.F., Mexico.
Appl Opt. 2013 Aug 1;52(22):E22-7. doi: 10.1364/AO.52.000E22.
Electrical and nonlinear optical experiments were performed on multiwall carbon nanotubes (CNTs) prepared by a chemical vapor deposition method. We report that the incorporation of platinum particles on the CNTs surface originates an enhancement in the photoconductive properties with noticeable capabilities to modulate optical and electrical signals. The photoconductive logic gate function OR was experimentally demonstrated using a simple photoconductive platform based on our samples. A two-photon absorption effect was identified as the main mechanism of third-order optical nonlinearity under a nonresonant nanosecond excitation. Multiphotonic interactions were described in order to explain the observed behavior.
对通过化学气相沉积法制备的多壁碳纳米管（CNT）进行了电学和非线性光学实验。我们报告称，在碳纳米管表面引入铂颗粒会增强其光电导特性，并具有显著的调制光信号和电信号的能力。利用基于我们样品的简单光电导平台，通过实验证明了光电导逻辑门功能“或”。在非共振纳秒激发下，双光子吸收效应被确定为三阶光学非线性的主要机制。为了解释观察到的行为，描述了多光子相互作用。
