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Search for: [Abstrakt = "A comprehensive theoretical model of an operation of vertical\-cavity surface\-emitting diode lasers \(VCSELs\) is used to compare anticipated room\-temperature \(RT\) continuous\-wave \(CW\) performance of three modern VCSEL designs\: the MESA VCSEL with the upper ring contact on the upper p\-side DBR structure and the bottom broad\-area contact as well as the single and the double intra\-cavity contacted VCSELs. The MESA VCSEL has been found to demonstrate the best mode selectivity because its desired single fundamental mode operation is expected even for the largest 20\-μm diameter devices. However its RT CW lasing thresholds are by about 30% higher than those for both intra\-cavity contacted VCSELs because of increasing free\-carrier absorption and heat generation. Therefore large\-size MESA VCSELs cannot operate at higher temperatures and\/or for higher operation currents. On the contrary, although both intra\-cavity contacted VCSELs ensure single\-fundamental\-mode operation for smaller devices only, they seem to operate properly also at higher temperatures and operation currents. Therefore, with an exception of some special applications, intra\-cavity contacted VCSELs currently seem to be the best VCSEL designs."]

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Optica Applicata

Morawiec, Seweryn Kowalczewski, Piotr Sarzała, Robert P. Gaj, Miron. Redakcja Urbańczyk, Wacław. Redakcja

2009
artykuł

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