Research on reflective micro-structures for laser protection

L. H. Li, B. Q. Wu, C. Y. Chan, Wing Bun Lee

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

With the continuous development of laser technology and the expanded applications of high energy, high-power, short-pulse laser, laser safety to operator and instrument become a major concern. Different wavelengths of lasers would cause different degrees of injury to the eyes. When the laser enters into the eyes, its energy will burn the corneas and may cause blindness. High energy laser will cause skin erythema and blisters which may eventually develop into cancer. The surface of instruments could also be damaged by laser. Therefore, the study of laser safety has received much attention. This research aims to develop a novel reflective micro-structured surface for protection against laser irradiation based on the latest microstructure design theory to eliminate the damage of the immense heat generated from a high power laser to people and equipment. The approach is novel and has significant application for both civic uses in laser safety as well as in national defence. The characteristic parameters of microstructure are designed on the basis of Fresnel's law and diffractive law. Then microstructure use solidworks and LightTools to make optical simulations. The designed optical microstructure helps to reflect the vertical incidence beam into a tilted emergent beam with a 10 degree angle, to prevent damage to people or instrument.
Original languageEnglish
Title of host publicationProceedings of the 15th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2015
Publishereuspen
Pages371-372
Number of pages2
ISBN (Electronic)9780956679079
Publication statusPublished - 1 Jan 2015
Event15th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2015 - Leuven, Belgium
Duration: 1 Jun 20155 Jun 2015

Conference

Conference15th International Conference of the European Society for Precision Engineering and Nanotechnology, EUSPEN 2015
CountryBelgium
CityLeuven
Period1/06/155/06/15

Keywords

  • Design of microstructure
  • Laser protection
  • Microstructure

ASJC Scopus subject areas

  • Materials Science(all)
  • Industrial and Manufacturing Engineering
  • Mechanical Engineering
  • Instrumentation
  • Environmental Engineering

Cite this