A research group led by Prof. Jiang Haihe from the Hefei Institutes of Physical Science of the Chinese Academy of Sciences has designed a 6-hole microstructure anti-resonant air-core fiber (AR-HCF) with a larger core diameter of 78 μm.
"This is the first time that 2.79 μm high-energy pulsed laser has been transmitted with good efficiency at room temperature," said Prof. Jiang. The study was published in Optics & Laser Technology.
Traditional medical laser devices often face challenges such as complex structures and low efficiency. The AR-HCF overcomes these problems with its simple design, high transmission efficiency, and flexibility.
In this study, the researchers designed a simple structure with high coupling transmission efficiency, high damage threshold, and flexible transmission AR-HCF to replace the light guide arm in laser energy transmission.
With an average coupling transmission efficiency of 77.3% and a maximum of 85%, the optical fiber cable system shows impressive performance.
This innovation enables efficient transmission of high-energy pulsed lasers, particularly in the mid-infrared range, which is critical for medical procedures.
More information: Lei Huang et al, High-efficiency 6-hole structure anti-resonant hollow-core fiber 2.79 μm Cr,Er:YSGG high-energy pulse laser transmission system, Optics & Laser Technology (2024). DOI: 10.1016/j.optlastec.2024.110743
Provided by Chinese Academy of Sciences
