红外激光传输用聚苯乙烯-银-玻璃基体空心波导研究

STUDY ON HOLLOW-WAVEGUIDES OF POLYSTYRENE- COATED SILVER-GLASS FOR TRANSMISSION OF INFRARED LASER ENERGY

利用液相镀膜法研制成了性能较好的激光传输用聚苯乙烯 -银 -玻璃基体小直径空心波导 ,波导长度达到 1m左右 ,波导直径为 80 0～ 12 0 0μm ,对于 CO2 激光 (10 .6μm )的传输损耗低达 1.73d B/ m,损伤阈值高于 11.2 W(17.2W/ m m2 ) .实验结果表明 ,聚苯乙烯 -银 -玻璃基体小直径空心波导适用于医学等领域 CO2 激光传输的要求 ,并有望在其他红外波段的激光能量传输中得到应用 .

Polystyrene-coated hollow glass waveguides were fabricated by means of liquid phase deposition method. The length of the waveguide is about 1m and its diameter is 800 to 1200 mum. The minimum optical loss of the waveguides is 1.73dB/m with damage threshold higher than 11.2W (17.2W/mm(2)) for CO2 laser (10.6 mum). Experimental results show that polystyrene-coated silver hollow glass waveguides are suitable for delivery of CO2 laser in medical applications, and are also promising for energy transmission of other infrared lasers.