Subtractive Laser Processing Using Extended Depth of Field Focusing

Seungyeon Kang, Craig B. Arnold

Research output: Chapter in Book/Report/Conference proceedingChapter


The removal of material through ablative processes has been studied extensively since the development of the laser. As applications employing such processes have become increasingly complex, requiring precise control while increasing speed and throughput, more advanced methods of beam delivery have been developed to achieve these goals. One important emerging methodology is the use of high depth of field optical elements to produce a line focus or other higher dimensional intensity patterns. In contrast to traditional beam focusing where the light is concentrated to a single location in xyz space, by using high depth of field focusing, it is possible to efficiently deliver energy through an extended region of space, thus gaining a number of important benefits for subtractive laser processing. This chapter reviews some of the current methods of producing a high depth of field and discusses the implications and benefits of such approaches for marking, cutting, and drilling of opaque and transparent materials.

Original languageEnglish (US)
Title of host publicationHandbook of Laser Micro-and Nano-Engineering
PublisherSpringer International Publishing
Number of pages23
ISBN (Electronic)9783030636470
ISBN (Print)9783030636463
StatePublished - Jan 1 2021

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy
  • General Engineering


  • Adaptive optics
  • Bessel beams
  • High depth of field optics
  • Laser ablation
  • Laser drilling
  • Laser marking
  • TAG lens


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