Ams Martin, Marshall G, Spence D, Withford M
Opt Express. 2005 Jul 25;13(15):5676-81. doi: 10.1364/opex.13.005676.
We report both theoretical and experimental results of a slit beam shaping configuration for fabricating photonic waveguides by use of femtosecond laser pulses. Most importantly we show the method supports focusing objectives with a long depth of field and allows the direct-writing of microstructures with circular cross-sections whilst employing a perpendicular writing scheme. We applied this technique to write low loss (0.39 dB/cm), single mode waveguides in phosphate glass.
我们报告了一种用于通过飞秒激光脉冲制造光子波导的狭缝光束整形配置的理论和实验结果。最重要的是，我们展示了该方法支持具有长景深的聚焦物镜，并允许在采用垂直写入方案的同时直接写入具有圆形横截面的微结构。我们应用此技术在磷酸盐玻璃中写入低损耗（0.39 dB/cm）的单模波导。
