Compensation for time fluctuations of phase modulation in a liquid-crystal-on-silicon display by process synchronization in laser materials processing

Research output: Contribution to journalArticle

3 Citations (Scopus)
166 Downloads (Pure)

Abstract

We demonstrate the adverse influence of temporal fluctuations of the phase modulation of a spatial light modulator (SLM) display device on nanosecond laser micromachining. We show that active cooling of the display reduces the amplitude of these fluctuations, and we demonstrate a process synchronization technique developed to compensate for these fluctuations when applying the SLM to laser materials processing. For alternative SLM devices developed specifically for laser wavefront control (which do not exhibit such flickering problems), we show that our process synchronization approach is also beneficial to avoid machining glitches when switching quickly between different phase profiles (and hence beam patterns). (C) 2011 Optical Society of America

Original languageEnglish
Pages (from-to)2899-2905
Number of pages7
JournalApplied Optics
Volume50
Issue number18
DOIs
Publication statusPublished - 20 Jun 2011

Keywords

  • HOLOGRAPHIC OPTICAL TWEEZERS
  • SPATIAL LIGHT-MODULATOR
  • DESIGN

Cite this