Resonances of the Fabry‐Perot Laser

摘要: The optical mode structure of a Fabry—Perot interferometer‐resonator composed two infinite strip mirrors is investigated from the point view general theory nonspectral resonances. It shown that classical description this configuration inadequate to describe its response highly monochromatic laser radiation and must be supplemented by discussion transverse resonance behavior. This introduces fine rings implies discrete behavior for interferometer. In analogy characterization quantum‐mechanical virtual levels wavefunctions complex energies it convenient characterize resonances functions resonant frequencies. On basis reformulation asymptotic expansion previously given stationary expression, in high‐frequency limit, open sides can replaced an effective impedance boundary condition. solution elementary problem then yields analytic approximations shapes, characteristic oscillation frequencies, modal lifetimes. common domain validity these results are excellent agreement with previous numerical work on problem.