Video Experimental Relacionado

Updated: Jan 8, 2026

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Láser de modo único y estrechamiento espectral en cavidades de defecto lineal de cristal fotónico a través de modos

Shu-Ning Ding, Ling-Fang Wang, Xiao-Tian Cheng

|December 19, 2025

Abstract:

The demand for high-efficiency and miniaturized on-chip light sources drives continuous innovation in photonic crystal (PhC) microcavity lasers. The presence of slow-light effects in PhC microcavities leads to the mode competition between Bloch modes resulting in multi-mode lasing, which obstructs the dense integration of PhC lasers. Here, we theoretically verify a technical scheme for the single-mode lasing of PhC line-defect-cavity lasers by spatially pumping a certain Bloch mode via optical interference.We demonstrate the capability to select a specific longitudinal mode to lase with a side mode suppression ratio (SMSR) exceeding 30 dB. The interaction between optical interference fringes and the vacuum electromagnetic field inside the PhC cavity improves the linewidth and noise characteristics of lasers. This scheme of Bloch mode selection provides a viable tool for the manipulation of PhC microcavity lasers.

Palabras clave:

cristal fotónico láser de microcavidad modo único modos de Bloch bombeo espacial estrechamiento espectral integración fotónica

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