强激光与粒子束, 2013, 25 (6): 1427, 网络出版: 2013-04-23
掺杂BaTiO3/SrTiO3多层膜与太赫兹波相互作用
Reciprocity between terahertz waves and doped BaTiO3/SrTiO3 multilayer films
太赫兹 量子级联激光器 多层薄膜 激光烧蚀沉积 掺杂 terahertz quantum cascade laser multilayer film laser ablation deposition doping
摘要
掺杂半导体中的载流子吸收在THz波段非常明显,其相互作用研究是研制THz通信中的关键器件之一的基础。采用氟化氪(KrF)脉冲准分子激光烧蚀沉积(PLD)技术,制备了Ni掺杂BaTiO3/SrTiO3多层膜。基于辐射频率为3.09 THz、脉冲功率为10 mW量级的THz 量子级联激光器(QCL)光源研究了太赫兹波在Ni掺杂BaTiO3/SrTiO3多层膜中的传输,发现损耗主要是Ni颗粒的非共振吸收导致。
Abstract
The carrier absorption of the doped semiconductor materials is evident in terahertz (THz). The reciprocity study is the basis for preparing the key apparatus in the THz communications. Using a pulsed KrF excimer laser ablation (PLD) technique, the Ni-doped BaTiO3/SrTiO3 multilayer film has been prepared. Based on 3.09 THz quantum cascade laser (QCL) with the peak optical power about 10 mW, the transition of THz waves in the Ni-doped BaTiO3/SrTiO3 multilayer films is studied. It is found that the main loss may be due to the nonresonant absorption of Ni particles.
王雪敏, 沈昌乐, 王瑜英, 黎维华, 彭丽萍, 雷红文, 吴卫东, 唐永建. 掺杂BaTiO3/SrTiO3多层膜与太赫兹波相互作用[J]. 强激光与粒子束, 2013, 25(6): 1427. Wang Xuemin, Shen Changle, Wang Yuying, Li Weihua, Peng Liping, Lei Hongwen, Wu Weidong, Tang Yongjian. Reciprocity between terahertz waves and doped BaTiO3/SrTiO3 multilayer films[J]. High Power Laser and Particle Beams, 2013, 25(6): 1427.