Our collaborative work on the selection, transfer and testing of semiconductor nanowire lasers has now been published in Nano Letters.
In this work, growth colleagues at ANU prepared nanowire lasers which were characterised at Manchester. This characterisation was used to select bins of nanowires, which were transferred using a cutting edge pick-and-place tool at the University of Strathclyde. The transferred wires were re-tested in Manchester; while some wires showed identical behaviour, some showed a change in lasing mode.
This work will guide the heterointegration of nanowire lasers with photonic circuits, targetting high-yield and industrial applicability.
Reference: Characterisation, Selection and Micro-Assembly of Nanowire Laser Systems, Jevtics et al., Nano Letters (ASAP), DOI: 10.1021/acs.nanolett.9b05078
In this work, we combine high-quality nanolaser growth (ANU) with high-throughput optical spectroscopy (Manchester) and high-speed pick-and-place technology (Strathclyde) to demonstrate scaled-up assembly of nanowire-based laser systems. We find that while the transfer process can affect the lasing properties of the nanowires, a class of wires exist where little or no difference in threshold is observed. Furthermore, the lasing wavelength is more robust under transfer than the laser threshold.
These findings and optimization procedure point the way towards the development of multiple element active nanowire laser photonic systems.
Reference: Characterisation, Selection and Micro-Assembly of Nanowire Laser Systems, Dimitars Jevtics et al., arXiv:2001.02032 [physics.app-ph]
The group welcomed Dr Antonio Hurtado of the University of Strathclyde Institute of Photonics to give a seminar at the Photon Science Institute. He spoke on Neuromorphic Photonics – the use of lasers as non-linear elements in a neuromorphic system.