Berlin 2018 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 36: Focussed Session: Frontiers in Laser Diode Physics I

HL 36.6: Invited Talk

Thursday, March 15, 2018, 11:30–12:00, EW 202

Simplicity VCSELs — •James A. Lott¹, Nasibeh Haghighi¹, Gunter Larisch¹, Ricardo Rosales¹, and Martin Zorn² — ¹Technische Universtität Berlin, Berlin, Germany — ²JENOPTIK Diode Labs GmbH, Berlin, Germany

We experimentally and theoretically investigate the optical, electrical, and thermal physics of vertical-cavity surface-emitting lasers (VCSELs) grown on gallium-arsenide substrates with epitaxial structures based on simplicity-in-design principles. We aim to minimize the complexity of our VCSEL epitaxial designs while simultaneously improving our VCSEL performance and reliability for specific resurgent, mainstream, and new VCSEL applications in sensing, communication, heating, and illumination. Our reduced epitaxial design complexity is expected to greatly reduce the cost to produce massive quantities of VCSELs on ever larger diameter starting wafers, and we believe similar Simplicity principles may be applied to the processed VCSEL device geometries to further reduce commercial VCSEL production costs. We demonstrate 980 nm Simplicity VCSELs with a wide range of emitting aperture diameters with record performance that exceeds the performance or our previous more complex VCSEL designs in common figures-of-merit including optical output power, efficiency and small-signal modulation bandwidth