Journal article
Ultracompact resonator with high quality-factor based on a hybrid grating structure
We numerically investigate the properties of a hybrid grating structure acting as a resonator with ultrahigh quality factor. This reveals that the physical mechanism responsible for the resonance is quite different from the conventional guided mode resonance (GMR). The hybrid grating consists of a subwavelength grating layer and an un-patterned high-refractive-index cap layer, being surrounded by low index materials.
Since the cap layer may include a gain region, an ultracompact laser can be realized based on the hybrid grating resonator, featuring many advantages over high-contrast-grating resonator lasers. The effect of fabrication errors and finite size of the structure is investigated to understand the feasibility of fabricating the proposed resonator.
Language: | English |
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Year: | 2015 |
Pages: | 14913-14921 |
ISSN: | 10944087 |
Types: | Journal article |
DOI: | 10.1364/OE.23.014913 |
ORCIDs: | Mørk, Jesper and Chung, Il-Sug |