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 and 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.
AR-HCF cross section structure. (Image by HUANG Lei)
2.79 μm AR-HCF space transmission experimental device. (Image by HUANG Lei)
AR-HCF loss at different bending radii and bending directions. (Image by HUANG Lei)
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