Multicolor Photoluminescence from Porous Silicon Using Focused, High‐Energy Helium Ions
Multicolor Photoluminescence from Porous Silicon Using Focused, High‐Energy Helium Ions
复制标题
使用聚焦的高能氦离子从多孔硅发出多色光致发光
DOI：
10.1002/adma.200501138
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
D. J. Blackwood
中科院分区：
文献类型：
--
作者：
E. Teo;M. Breese;A. Bettiol;D. Mangaiyarkarasi;F. Champeaux;F. Watt;D. J. Blackwood
2强度。在光照射过程中，我们用偏光显微镜观察了蓝色相的光学结构。光学实验采用光学显微镜（IX71, Olympus）和光谱仪（USB2000, Ocean Optics）。我们将来自卤钨光源（L7893, Hamamatsu Photonics）的非偏振白光光束通过物镜（50,LC Plan Apo, Olympus）聚焦在样品表面，光斑直径为30 lm。采用连续波（CW）激光器（532 nm, 0.13 mW, Edmund Optics）和调q Nd:YAG（钇铝石榴石）激光器（532 nm， 8 ns脉冲，Polaris II, New Wave Research）测量了蓝相的自发发射光谱。利用半波片结合偏光棱镜调节激发能。将激发光束引入光学显微镜，通过物镜（20,LC Plan Apo, Olympus）聚焦到样品表面，得到光斑大小约为50 lm。利用Acton Research的Spectra Pro. 150和电荷耦合器件（CCD）检测器256HB对透射样品的激光发射进行了采集和光谱分析。
–2 intensity. During photoirradiation, we monitored the optical texture of the blue phases with a polarizing optical microscope. Optical experiments were conducted with an optical microscope (IX71, Olympus) combined with spectrometers (USB2000, Ocean Optics). We focused the non-polarized white-light beam from a tungsten halogen light source (L7893, Hamamatsu Photonics) on the surface of the sample with a spot size of 30 lm in diameter through an objective (50, LC Plan Apo, Olympus). The spontaneous emission spectra from the blue phases were measured by using a continuouswave (CW) laser (532 nm, 0.13 mW, Edmund Optics), and lasing spectra were measured by a Q-switched Nd:YAG (yttrium aluminum garnet) laser (532 nm, 8 ns pulse, Polaris II, New Wave Research). The excitation energy was adjusted using a half-wave plate in combination with a polarizing prism. The excitation beam was conducted to the optical microscope and focused onto the sample surface through an objective (20, LC Plan Apo, Olympus) to obtain a spot size of about 50 lm. We collected the laser emission from the sample in transmission and analyzed the spectrum with a spectrometer (Spectra Pro. 150 and charge-coupled device (CCD) detector 256HB, Acton Research).