Autocorrelator for the measurement of a quasi-continuous-wave laser beam sinusoidally modulated at 17 THz

Kazuki Ihara, Shin ichi Zaitsu, Chihiro Eshima, Totaro Imasaka

Research output: Contribution to journalArticle


The development of an autocorrelator, using a photomultiplier as a nonlinear optical detector, for the measurement of a quasi-continuous-wave laser beam in the milliwatt range, is described. The contribution of the two-photon absorption relative to the one-photon absorption was investigated for the Sb-Cs photocathode used in the photomultiplier by means of the Z-scan method. This autocorrelator was applied to the measurement of the intensity of a laser beam sinusoidally modulated in the tetrahertz range.

Original languageEnglish
Pages (from-to)711-713
Number of pages3
JournalScience and Technology of Advanced Materials
Issue number7
Publication statusPublished - Oct 1 2006


All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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