期刊
MATERIALS
卷 14, 期 15, 页码 -出版社
MDPI
DOI: 10.3390/ma14154065
关键词
photonic hypercrystals; distributed feedback laser; hyperbolic metamaterials
类别
资金
- National Science Center (NCN) [UMO2016/23/N/ST7/03573]
This work investigates light generation in a DFB laser with a hyperbolic medium and active material, forming a 1D photonic hypercrystal. By tuning effective dispersion, laser action can be controlled for single-frequency generation with high side-mode suppression and controllable wavelength of operation. Additionally, a new mechanism for laser amplitude modulation via voltage-controllable dispersion of hyperbolic medium is presented.
In this work, we investigate the generation of light in a distributed feedback (DFB) laser composed of periodically arranged layers of hyperbolic medium and active material forming a 1D photonic hypercrystal (PHC). The scope of our study covers the analysis of laser action in the presence of different types of dispersion that are achievable in a hyperbolic medium. Using the example of a PHC structure consisting of graphene-based hyperbolic medium, we demonstrate the possibility of controlling laser action by tuning effective dispersion. Our analysis reveals the possibility of obtaining a single-frequency generation with high side-mode suppression and controllable wavelength of operation. Moreover, we present a new mechanism for the modulation of laser amplitude arising from voltage-controllable dispersion of hyperbolic medium.
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