短パルスレーザー光による光破壊確率の波長依存性

概要

論文の詳細を見る
Probabilistic behavior of optical breakdown in water is investigated as a function of the laser intensity using Q-switched 0.532μm and 1.06μm lasers with 5 nsec duration and are compared with the breakdown probability of air in which a avalanche mechanism is believed to govern the breakdown process. These results suggest us a mechanism of optical breakdown is the following. Initial electrons are supplied from liquid itself or impurities in liquids by multiphoton absorption process. These seed electrons absorb laser radiation thorough collision with liquid molecules (microwave breakdown process) and acquires sufficient energy to induce avalanche ionization of liquid molecules.
近畿大学の論文
2004-12-20