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Calculation and measurement of resonant-mode blueshifts in oxide-apertured VCSELs

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4 Author(s)

As the aperture size of oxide-apertured vertical-cavity surface-emitting lasers (VCSELs) shrinks, the lasing wavelength blueshifts. We have calculated this effect using both a scalar effective index model and a full-vector weighted index model. Results were compared against experimental data for two different VCSEL designs emitting near 780 and 850 nm. We find that the full-vector weighted index calculation matches the data remarkably well, while the scalar effective index calculation underestimates the blueshift.

Published in:

Photonics Technology Letters, IEEE  (Volume:10 ,  Issue: 4 )