Abstract
We investigate the modal characteristics of a telecommunication-oriented, phosphide photonic crystal vertical-cavity surface-emitting laser (VCSEL) as a function of the hole depth by using a three–dimensional, full vectorial plane-wave admittance method. The interplay of diffraction–waveguiding is considered and the optimal depth of the photonic crystal holes is determined, providing single mode operation with the smallest etching depth of the photonic crystal structure.
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