A geometric algebra reformulation of geometric optics

Quirino Jr Mallorca Sugon, Daniel J. McNamara

    Research output: Contribution to journalArticlepeer-review

    7 Citations (Scopus)

    Abstract

    We present a tutorial on the Clifford (geometric) algebra Cl3,0 and use it to reformulate the laws of geometric optics. This algebra is essentially a Pauli algebra, with the Pauli sigma matrices interpreted as unit rays or vectors. In this algebra, the exponentials of imaginary vectors act as vector rotation operators. This property lets us rewrite the laws of reflection and refraction of light in geometric optics in exponential form. The reformulated laws allow easy translation of symbols to words and to diagrams. They also are shown to be equivalent to standard vector formulations. These coordinate-free laws can be shown to simplify the analysis of geometric optics problems such as the tracing of meridional and skew rays in lenses and optical fibers.

    Original languageEnglish
    Pages (from-to)92-97
    Number of pages6
    JournalAmerican Journal of Physics
    Volume72
    Issue number1
    DOIs
    Publication statusPublished - Jan 1 2004

    All Science Journal Classification (ASJC) codes

    • Physics and Astronomy(all)

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