激光器
制作
材料科学
光子晶体
光电子学
光学
半导体激光器理论
光子学
波长
分布反馈激光器
单模光纤
物理
医学
病理
替代医学
作者
Holger F. Hofmann,H. Scherer,S. Deubert,M. Kamp,A. Forchel
摘要
The authors report on the fabrication and characterization of photonic crystal distributed feedback lasers, which are a generalization of distributed feedback and angled distributed feedback lasers. Spectral and spatial mode selection is provided by a two-dimensional, rectangular lattice of etched air holes that is tilted relatively to the cleaved facets. InGaAs∕AlGaAs laser layers emitting around 1μm were used for the fabrication of the devices. The laser emits at a single wavelength with a side mode suppression ratio of 50dB. The emission is concentrated in a narrow far field, indicating that a coherent mode is formed over the entire width of the device.
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