Compensation of thermally induced birefringence in active medium made of polycrystalline ceramics

Mikhail A. Kagan, Efim A. Khazanov

Research output: Contribution to journalConference article

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Abstract

The essential difference of ceramics from a single crystal is that crystal axes in each grain comprising ceramics are arbitrarily oriented. We apply quaternion formalism (instead of traditional Jones matrix formalism) to describe depolarization of laser beam. This allows us to derive analytical expressions for depolarization ratio for uncompensated case and for all known compensation techniques as well. The analytic results, we have got, are in good agreement with numerical ones. It has been shown, that ceramic is almost equivalent to crystal if the ratio of the rod length to grain length is about 300 or more. In particular, uncompensated depolarization is inversely proportional to this ratio. The latter is an important consequence of the random nature of thermally induced birefringence in ceramics.

Original languageEnglish (US)
Pages (from-to)151-162
Number of pages12
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume4968
DOIs
StatePublished - Sep 29 2003
EventSolid State Lasers XII - San Jose, CA, United States
Duration: Jan 28 2003Jan 30 2003

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All Science Journal Classification (ASJC) codes

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

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