System and method for recording dynamic change of laser ablated matter at nanosecond time resolution

• Main Authors: ZHANG CHANGJIANG, LYU TAO, MENG JIULING, HU YANG, LI ZIHAN
• Format: Patent
• Language: Chinese; English
• Published: 02.02.2018
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The invention discloses a system and a method for recording the dynamic change of a laser ablated matter at nanosecond time resolution. A pulse delay controller controls the time when a pump laser system emits laser pulse and the time when a probe light system emits probe light in order to achieve a time delay between the two kinds of pulse light. The probe light emitted by the probe light systemfalls on the surface of a target sample, and a shadow formed after the probe light is transmitted through a laser ablated matter is imaged in a camera of an online monitoring device. The camera can accurately record the instantaneous morphology of shock wave, plasma and eruptive materials. The system and the method can be used to study the dynamic change law of aerosol particles formed from laserablated particles in the air or under inert carrier gas, and can help to study the influence of the number, diameter and morphology of ablated particles on the effect of geochemical element fractionation. 本发明公开了纳秒级时间分辨率记录激光剥蚀物