Thermal crosstalk in 4 x 4 vertical-cavity surface-emitting laser arrays
1996; Institute of Electrical and Electronics Engineers; Volume: 8; Issue: 8 Linguagem: Inglês
10.1109/68.508710
ISSN1941-0174
AutoresT. Wipiejewski, D.B. Young, B.J. Thibeault, L.A. Coldren,
Tópico(s)Photonic and Optical Devices
ResumoWe measured thermal crosstalk in 4×4 VCSEL arrays with a 30-μm pitch between devices. The effective thermal resistance of laser diodes in two-dimensional (2-D) arrays is about 50% higher than that of single elements. The output power of the lasers is fairly temperature insensitive under constant voltage operation. From experiments we inferred values for the average thermal conductivity of AlAs-GaAs Bragg reflectors. We found anisotropy in the effective thermal conductivity with numbers of 0.28 W/(cmK) and 0.35 W/(cmK) for the transverse and lateral direction, respectively.
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