Optical tweezers with assistance of sub-microsecond-duration pulse laser beam
Optical tweezers with assistance of sub-microsecond-duration pulse laser beam
复制标题
亚微秒脉冲激光束辅助的光镊
DOI：
10.1143/apex.5.042701
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发表时间：
2012
影响因子：
2.3
通讯作者：
Kotaro Minato
中科院分区：
文献类型：
--
作者：
Saki Maeda;Tadao Sugiura;Kotaro Minato
我们报道了利用聚焦的亚微秒脉冲激光束产生的强瞬时力的光镊。生物应用中需要强大的瞬时力。从微米级颗粒的运动分析中得出，在水中用于脉冲辅助的合适的脉冲持续时间在100至1000 ns的量级上。我们进行了光镊实验与聚焦脉冲光束的持续时间为160纳秒同轴入射连续激光束。根据从玻璃表面提取颗粒的实验，提取所需的能量比150 µs持续时间的情况小60倍。
We report optical tweezers with the assistance of a strong instantaneous force generated by a focused pulse laser beam of sub-microsecond duration. A strong instantaneous force is required in biological applications. A suitable pulse duration for pulse assistance in water is derived on the order of 100 to 1000 ns from motion analysis of a micrometer-sized particle. We performed optical tweezers experiments with a focused pulse beam of 160 ns duration coaxially incident with a CW laser beam. From the experiments on particle extraction from a glass surface, the required energy for extraction is smaller than the case of 150 µs duration by a factor of 60.