Development of HAUP and its applications to various kinds of solids

Jinzo Kobayashi*, Toru Asahi

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

5 Citations (Scopus)


Optical activity was found in 1811 by Arago. However, optical activity of solids is extremely small and overwhelmed by existing birefringence, so it could not be measured until the high accuracy universal polarimeter (HAUP) was developed by us in 1983. The HAUP method enables us to measure optical activity and birefringence of any solids even belonging to monoclinic and triclinic systems. The principles of the HAUP and the more generalized one are given. The applications of the HAUP method to various kind of solids, i.e., the elucidation of the origin of the incommensurate state of ferroelectrics, optical activities of monoclinic crystals, huge optical activity of high polymer sheet, and the first measurement of a protein, lysozyme, crystal are described. These applications illustrate that axial tensorial consideration provides otherwise inaccessible insight of previously unsolved problems. Therefore we stress the necessity of developing a new research field defined as 'chiral physics', where axial tensors play essential roles.

Original languageEnglish
Pages (from-to)25-39
Number of pages15
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - 2000 Jan 1
EventComplex Mediums - San Diego, CA, USA
Duration: 2000 Jul 302000 Aug 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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