Jet generation device and jet generation method of jet generation device

摘要

A jet generating device capable of generating a high-speed liquid jet, generating a liquid jet with high efficiency, adjusting the flow velocity and energy of the liquid jet, and adjusting the jet time. The jet generating device 100C includes a cylindrical liquid chamber 160, a nozzle 165 that opens the end of the liquid chamber 160 and ejects the liquid F to the outside, and a liquid supply path 140 that supplies the liquid F into the liquid chamber 160. The laser chamber includes a laser beam irradiation unit 21 that irradiates a liquid F by irradiating a pulse laser beam into the liquid chamber 160, and a laser oscillator (laser device 2) that generates the pulsed laser beam. The optical pulse width is controlled independently, and the inner surface of the liquid chamber 160 has a mirror surface, and the nozzle 165 and the laser beam irradiation section 21 are arranged in accordance with one or both of the pulse laser beam intensity and the laser beam pulse width. It has an adjustment part (fiber drive device 170C, automatic control part 41) which adjusts the distance between laser beam irradiation parts 21.