[6a-C14-1~14] 3.13 Semiconductor optical devices

[6a-C14-7] Dependence of the modal diffraction loss on the mirror width for 2D microcavity

〇Takehiro Fukushima¹ (1.Okayama Pref. Univ.)

Keywords:microcavity, laser diode, resonator mode

In the research field of two-dimensional optical microcavities, stable periodic orbit resonances are often observed. The resonance modes can be approximated by Gaussian beams propagating along the stable periodic orbits very well as long as the beam width is small enough compared to the end-mirror widths. However, the approximation accuracy is degraded and the pattern of the resonance mode is deformed as the end mirror width decreases. The deformation affects the diffraction loss of the resonance mode. In this work, we investigated the dependence of the diffraction loss on the end-mirror width for the resonance modes in a simple two-mirror stable microcavity using the Fox-Li approach for typical resonator conditions, such as a confocal condition and near concentric conditions.