An impact of the electrical pumping scheme on some VCSEL performance characteristics

• Autorzy: Morawiec S. , Kowalczewski P. , Sarzała R. P.
• Języki publikacji: EN

Abstrakty

EN

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-žm 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.

Słowa kluczowe

EN

vertical-cavity surface-emitting diode lasers (VCSELs); simulation of VCSEL performance

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Optica Applicata
• Rocznik: 2009
• Tom: Vol. 39, nr 4
• Strony: 691--699
• Opis fizyczny: bibliogr. 8 poz.,

Twórcy

autor

Morawiec S.

autor

Kowalczewski P.

autor

Sarzała R. P.

• Laboratory of Computer Physics, Institute of Physics, Technical University of Łódź, ul. Wólczańska 219, 90-924 Łódź, Poland

Bibliografia

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• [6] SARZAŁA R.P., Designing strategy to enhance mode selectivity of higher-output oxide-confined vertical-cavity surface-emitting lasers, Applied Physics A: Materials Science and Processing 81(2), 2005, pp. 275–283.
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