Are blue and ultraviolet VCSELs a reality or just a dream?
Conference contribution, 2020

Blue-emitting vertical-cavity surface-emitting lasers (VCSELs) with high optical output powers and decent threshold current densities have recently been demonstrated, but the power efficiency is still below 10%. We will give an overview of the challenges to realize high-performing devices and summarize state-of-the-art results, including our schemes for optically guided devices that are used in the best blue VCSELs today. In addition, we will present our method to simultaneously achieve high-reflectivity mirrors and good control over the cavity length for ultraviolet VCSELs. This has resulted in, to the best of our knowledge, the shortest VCSEL emission wavelength around 310 nm.

Author

Åsa Haglund

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Filip Hjort

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Johannes Enslin

Technische Universität Berlin

Munise Cobet

Technische Universität Berlin

Michael Alexander Bergmann

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Seyed Ehsan Hashemi

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Tim Kolbe

Ferdinand-Braun-Institut fur Hochstfrequenztechnik

Johan Gustavsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Jörgen Bengtsson

Chalmers, Microtechnology and Nanoscience (MC2), Photonics

Tim Wernicke

Technische Universität Berlin

Michael Kneissl

Technische Universität Berlin

SPIE Photonics West
San Franscisco, USA,

Areas of Advance

Information and Communication Technology

Nanoscience and Nanotechnology (SO 2010-2017, EI 2018-)

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Other Electrical Engineering, Electronic Engineering, Information Engineering

Infrastructure

Chalmers Materials Analysis Laboratory

Nanofabrication Laboratory

More information

Created

11/27/2020