Author Affiliations
Abstract
1 Department of Physics, University of Science and Technology of China, Hefei 230026
2 Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026
3 Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Science, Beijing 100080
In this article, we reported near-field research on azobenzene polymer liquid crystal films using scanning near-field optical microscopy (SNOM). Optical writing and subsequently topographic reading of the patterns with subwavelength resolution were carried out in our experiments. Nanometer scale dots and lines were successfully fabricated on the films and the smallest dot diameter is about 120 nm. The width of the line fabricated is about 250 nm. This method is also a choice for nanolithography. The mechanism of the surface deformation on the polymer films was briefly analyzed from the viewpoint of gradient force in the optical near field. The intensity distribution of the electric field near the tip aperture was numerically simulated using finite-difference time-domain (FDTD) method and the numerical simulation results were consistent with the experimental results.
180.5810 scanning microscopy 100.6640 superresolution 220.4610 optical fabrication Chinese Optics Letters
2005, 3(2): 02107
1 Laboratory of Quantum Information and Quantum Computation, Department of Physics, University of Science and Technology of China, Hefei 230026, China
2 Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China
Chinese Journal of Lasers B
2001, 10(5): 365
采用一种新方法,用脉冲CO2激光器获得了掺氢非晶硅薄膜。描述了我们的实验。给出了生长速率与有关实验参数的关系和合适的工作条件;测量和分析了这种薄膜的某些性质。
实验研究了乙醇分子的红外多光子离解特性。给出了离解速率与激光频率、激光能量、激光脉冲数、温度、初始气压的关系。离解阈值约为1.8焦耳/厘米2,观测到离解速率的极大值相对于其线性吸收峰向长波方向位移约8厘米-1。
