Response of ∼100 micron water jets to intense nanosecond laser blasts

Lihao Gao, Yanchu Liu, Hui Tang, and Weiwei Deng
Phys. Rev. Fluids 7, 034001 – Published 7 March 2022
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Abstract

We performed an experimental study on water microjets of 100 microns in radius ablated in air by both green (532 nm) and near infrared (1064 nm) nanosecond laser pulses with up to 1100 mJ per pulse. We show this affordable and accessible experimental apparatus captures the essence of the water jet response after being ablated by an intense laser pulse. The results reveal that ∼3.5% of laser pulse energy enters the water jet and half reaches the nozzle orifice as far as 50 times the jet diameter away from the ablation point through internal reflections. The energy density absorbed by the nozzle orifice exceeds the damage threshold of stainless steel, causing microexplosions and formation of a liquid sheet near the nozzle orifice.

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  • Received 10 August 2021
  • Accepted 8 February 2022

DOI:https://doi.org/10.1103/PhysRevFluids.7.034001

©2022 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
Drop interactionsLight-matter interactionMechanical effects of light on material mediaMicrofluidicsRayleigh-Taylor instabilitySurface tension effectsThin fluid films
  1. Physical Systems
Drops & bubbles
Fluid Dynamics

Authors & Affiliations

Lihao Gao1,2, Yanchu Liu1, Hui Tang2,*, and Weiwei Deng1,3,†

  • 1Department of Mechanics and Aerospace Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, China
  • 2Department of Mechanical Engineering, The Hong Kong Polytechnic University, Hong Kong, China
  • 3SUSTech Center for Complex Flows and Soft Matter Research, Shenzhen 518055, China

  • *h.tang@polyu.edu.hk
  • †dengww@sustech.edu.cn

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Issue

Vol. 7, Iss. 3 — March 2022

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