Fabrication of a microresonator-fiber assembly maintaining a high-quality factor by CO2 laser welding
Zhiwei Fang, Jintian Lin, Min Wang, Zhengming Liu, Jinping Yao,, Lingling Qiao, and Ya Cheng
TL;DR
This paper presents a method to fabricate a high-Q microresonator-fiber assembly using femtosecond laser micromachining and CO2 laser welding, achieving a Q-factor of over 2 million.
Contribution
It introduces a novel fabrication process combining femtosecond laser micromachining and CO2 laser welding for high-quality microresonator-fiber assemblies.
Findings
Achieved a Q-factor of 2.12×10^6 in the assembled device.
Reliable assembly of fiber taper to microtoroid using CO2 laser welding.
Optimized contact position enhances the Q-factor.
Abstract
We demonstrate fabrication of a microtoroid resonator of a high-quality (high-Q) factor using femtosecond laser three-dimensional (3D) micromachining. A fiber taper is reliably assembled to the microtoroid using CO2 laser welding. Specifically, we achieve a high Q-factor of 2.12*10^6 in the microresonator-fiber assembly by optimizing the contact position between the fiber taper and the microtoroid.
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Taxonomy
TopicsLaser Material Processing Techniques · Photonic and Optical Devices · Semiconductor Lasers and Optical Devices