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In order to well understand process of balloon rupture by high intensity focused ultrasound (HIFU), the process was analyzed using high speed camera. The balloon, which is used in fetal endoscopic tracheal occlusion (FETO) for treatment of congenital diaphragmatic hernia (CDH), was used. A silicon tube whose inside can be seen is a model of the trachea. The balloon was placed in the silicon tube and...
Thermal and fluid behavior are governing factors for the via processing of semiconducting substrates. In order to investigate the fundamentals, nanosecond (ns) time-resolved visualization of ns-pulse Nd:YAG laser ablation of SiC substrate has been performed for various conditions. Time-resolved visualizations have been conducted by using a ultra high speed camera with the frame rate of 200 million...
We developed a high power and semi-cooled 1.55-µm 43-Gbit/s EA/DFB laser and 2-km transmission was demonstrated at 45°C with +4.1-dBm fiber output power, 28% mask margin, and 14.1-dB extinction ratio for the first time.
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