Title:
An impact of the electrical pumping scheme on some VCSEL performance characteristics
Group publication title:
Creator:
Morawiec, Seweryn ; Kowalczewski, Piotr ; Sarzała, Robert P.
Subject and Keywords:
optyka ; vertical-cavity surface-emitting diode lasers (VCSEL) ; simulation of VCSEL performance
Description:
Optica Applicata, Vol. 39, 2009, nr 4, s. 691-699
Publisher:
Oficyna Wydawnicza Politechniki Wrocławskiej
Place of publication:
Contributor:
Gaj, Miron. Redakcja ; Urbańczyk, Wacław. Redakcja
Date:
Resource Type:
Source:
<sygn. PWr A3481II> ; click here to follow the link ; click here to follow the link
Language:
Relation:
Optica Applicata ; Optica Applicata, Vol. 39, 2009 ; Optica Applicata, Vol. 39, 2009, nr 4 ; Politechnika Wrocławska. Wydział Podstawowych Problemów Techniki
Location:
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.
Rights:
Wszystkie prawa zastrzeżone (Copyright)