Miese Christopher, Withford Michael J, Fuerbach Alexander
Centre for Ultrahigh bandwidth Devices for Optical Systems (CUDOS), MQPhotonics Research Centre, Department of Physics and Astronomy, Macquarie University, Sydney, NSW 2109, Australia.
Opt Express. 2011 Sep 26;19(20):19542-50. doi: 10.1364/OE.19.019542.
Waveguide Bragg gratings (WBGs) were directly inscribed into Alkaline Earth Boro-Aluminosilicate glass samples in a single process step at high fabrication speeds. We utilized a 5.1 MHz femtosecond oscillator to exploit high repetition rate heat accumulation effects. The pulse energy was modulated using a Pockels cell in order to fabricate waveguides that contain a periodic array of nano-structures inside their core. We have demonstrated, for the first time, that the transient build-up of heat accumulation within the sample can lead to the formation of a permanent nano-void. This effect can be exploited to fabricate WBGs at high speeds.
在单个工艺步骤中，以高制造速度将波导布拉格光栅（WBG）直接写入碱土硼铝硅酸盐玻璃样品中。我们使用5.1兆赫兹飞秒振荡器来利用高重复率热积累效应。使用普克尔盒调制脉冲能量，以制造在其纤芯内包含纳米结构周期性阵列的波导。我们首次证明，样品内热积累的瞬态积累会导致永久性纳米空洞的形成。这种效应可用于高速制造WBG。
