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- Söderberg, Emma, 1980, et al.
(författare)
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Suppression of higher order transverse modes and oxide modes in 1.3 µm InGaAs VCSELs by an inverted surface relief
- 2007
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Ingår i: IEEE Photonics Technology Letters. ; 19, s. 327-
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Tidskriftsartikel (refereegranskat)abstract
- It is shown, by a systematic variation of design parameters, that the use of an inverted surface relief is very effective for suppressing higher order transverse modes in oxide confined 1.3-mum InGaAs vertical-cavity surface-emitting lasers (VCSELs). Single-mode emission is achieved for a large variety of oxide aperture and surface relief diameters, with optimum designs, having a surface relief with a diameter half of that of the oxide aperture, producing 1.1-1.3 mW of single-mode power. It is also shown that the anti-phase layer employed to enable the use of an inverted surface relief is effective for suppressing oxide modes that otherwise appear in oxide confined VCSELs with a large detuning between the gain peak and the cavity resonance
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