Spontaneous emission evaluation in a photonic bandgap microcavity

This work is concerned with an electromagnetic model of a microresonator built in a dielectric periodical structure, with the purpose to achieve the control of spontaneous emission. The aim is to enhance the spontaneous emission into the lasing mode and to reduce it into the continuous spectrum of the nonlasing modes. An example of design of the microcavity structure is presented, together with the evaluation of the β-factor for various operating conditions.