标题: | 二维光子晶体雷射特性分析与设计 Design and Characterization of Two-Dimensional Photonic Crystal Lasers |
作者: | 卢赞文 Tsan-Wen Lu 李柏璁 Po-Tsung Lee 光电工程学系 |
关键字: | 半导体雷射;光子晶体;Semiconductor Lasers;Photonic Crystals |
公开日期: | 2004 |
摘要: | 我们于本文中展示了二维光子晶体的基本设计以及特性分析。首先,我们利用三维平面波展开法以及有限元素时域差分法来计算光能隙以及光子晶体微共振腔的缺陷模态及其频谱,藉此,我们得以在结构设计上达成优化的目的。除此之外,本文中亦简单的介绍了对称与非对称结构二维光子晶体雷射的制程技术。 为了量测并分析二维光子晶体的各种基本特性,我们架设了一套长波长共焦显微光谱系统。利用此系统,我们观察并分析了光子晶体微共振腔中的共振模态以及雷射激发模态,这其中包括了基本的雷射激发频谱,光激发光输出曲线,可调波长雷射行为,以及雷射模态的偏极化现象。 最后,我们亦架设了一套热电半导体定温系统,利用这套系统,我们得以探讨二维光子晶体雷射的各种热特性。在雷射波长热调变的探讨中,我们得到了与模拟结果相符合的实验结果。此外我们还分析了此元件的临界激发能量对于激发条件以及基板温度的相关性。最后,我们计算了该元件的热阻,并与目前的面射型垂直共振腔雷射做一比较。 In this thesis, we show the basic design and characteristics of two-dimensional photonic crystal lasers. At first, a series of simulations are performed by using three-dimensional plane-wave-expansion (PWE) method and finite-difference time-domain (FDTD) method in order to calculate the band diagrams and defect modes of the photonic crystal micro-cavities. According to these simulations, we can optimize the structure of the devices. The fabrication of the membrane and the asymmetric structure are also introduced. We setup a micro-photo-luminescence (PL) system in order to characterize the two-dimensional photonic crystal lasers. The basic characteristics of the micro-cavities are investigated including resonance modes and lasing modes. The basic lasing properties are investigated such as lasing spectra, L-L curves, tuning properties and mode polarization. We setup a thermo-electro cooler (TEC) system in order to characterize the thermal properties of two-dimensional photonic crystal lasers under different conditions. The lasing properties under different substrate temperatures are investigated both in experiment and theory. We also investigate the threshold dependence on different substrate temperatures and pump conditions. At last, we calculate the thermal resistance of two-dimensional photonic crystal lasers and compare it with that of general VCSELs for our future work. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#GT009224522 http://hdl.handle.net/11536/76715 |
显示于类别: | Thesis |
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