Wave interference effect on polymer microstadium laser

TL;DR

This paper studies how wave interference influences lasing modes in chaotic polymer microstadiums, revealing that interference of orbit waves causes mode amplitude modulation and quality factor variations, providing direct evidence of wave effects in open chaotic cavities.

Contribution

It demonstrates the wave interference effect on lasing modes in chaotic microstadiums through numerical simulations and experimental observations.

Findings

Lasing modes are regularly spaced and oscillate in amplitude with frequency.

Lasing modes are identified as multi-orbit scar modes.

Wave interference causes local maxima in quality factor at specific frequencies.

Abstract

We investigate the lasing modes in fully chaotic polymer microstadiums under optical pumping. The lasing modes are regularly spaced in frequency, and their amplitudes oscillate with frequency. Our numerical simulations reveal that the lasing modes are multi-orbit scar modes. The interference of partial waves propagating along the constituent orbits results in local maxima of quality factor at certain frequencies. The observed modulation of lasing mode amplitude with frequency results from the variation of quality factor, which provides the direct evidence of wave interference effect in open chaotic microcavities.