Study of Quantum-Dot Photonic Crystal Microcavity Lasers and their Coupling Structures
Date Issued
2014
Date
2014
Author(s)
Wu, Su-Heng
Abstract
In this thesis, two sets of radius/period were adopted to achieve room-temperature lasing for photonic crystal micro-cavity lasers. E-beam lithography, dry etching, and wet etching were used to successfully fabricate photonic crystal micro-cavity lasers on samples with InAs quantum-dots as active region. Room-temperature lasing was achieved by continuous-wave pumping. Influence on threshold power by adjusting the two holes adjacent to L3 cavities was also investigated.
Fundamental H1, L3, and L5 photonic crystal micro-cavities were combined into photonic crystal coupled-cavities, whose lasing modes were observed and investigated at room temperature. Coupled cavities consisting of two L3 cavities were also fabricated, with mode splitting observed at room temperature.
Integration of photonic crystal lasers with ridge waveguides was realized. Efforts were made to investigate if the light came out from waveguides by collecting it from different ways.
Subjects
光子晶體
雷射
耦合結構
Type
thesis
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