Lead-salt-based VCSELs for the 3- to 6-um range

Thomas Schwarzl; Wolfgang Heiss; G. Springholz; M. Aigle; H. Pascher; K. Biermann; Klaus Reimann

doi:10.1117/12.424804

4 May 2001 Lead-salt-based VCSELs for the 3- to 6-μm range

Thomas Schwarzl, Wolfgang Heiss, G. Springholz, M. Aigle, H. Pascher, K. Biermann, Klaus Reimann

Proceedings Volume 4286, Vertical-Cavity Surface-Emitting Lasers V; (2001) https://doi.org/10.1117/12.424804
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Operation of IV-VI vertical-cavity surface-emitting lasers emitting in the mid-infrared is reported. The microcavity laser structures were grown by molecular-beam-epitaxy on BaF2(111) substrates. The stimulated emission is generated in PbTe quantum wells embedded in high finesse Pb0.95Eu0.05Te/EuTe microcavity structures by optically pumping with fs and ns laser pulses. Laser samples were designed for operation at 2 K, at 70 K and at room temperature with emission at 6 mm, 4.8 mm and around 3 mm, respectively. At a wavelength of 3.1 mm, laser operation is obtained up to a temperature of 65°C, limited by nonradiative recombination processes. The temperature dependence of the emission is explained in terms of the strong temperature dependence of the energy band gap of the lead salt compounds as compared to the microcavity resonance energy in agreement with envelope function calculations of the quantum well energy levels.

Citation Download Citation

Thomas Schwarzl, Wolfgang Heiss, G. Springholz, M. Aigle, H. Pascher, K. Biermann, and Klaus Reimann "Lead-salt-based VCSELs for the 3- to 6-μm range", Proc. SPIE 4286, Vertical-Cavity Surface-Emitting Lasers V, (4 May 2001); https://doi.org/10.1117/12.424804

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