A webcam in Bayer-mode as a light beam profiler for the near infra-red

Gregor Langer, Armin Hochreiner, Peter Burgholzer, Thomas Berer

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Beam profiles are commonly measured with complementary metal oxide semiconductors (CMOS) or charge coupled devices (CCD). The devices are fast and reliable but expensive. By making use of the fact that the Bayer-filter in commercial webcams is transparent in the near infra-red (>800 nm) and their CCD chips are sensitive up to about 1100 nm, we demonstrate a cheap and simple way to measure laser beam profiles with a resolution down to around ±1 μm, which is close to the resolution of the knife-edge technique.

Original languageEnglish
Pages (from-to)571-575
Number of pages5
JournalOptics and Lasers in Engineering
Volume51
Issue number5
DOIs
Publication statusPublished - May 2013

Keywords

  • Bayer-mode
  • Beam profiler
  • Webcam

Fingerprint Dive into the research topics of 'A webcam in Bayer-mode as a light beam profiler for the near infra-red'. Together they form a unique fingerprint.

Cite this