Presentation Details
| Multifunctional III–V Laser Power Converters and Hybrid PV/EAM Devices for 1‑µm Multi‑Mode Laser Terminals Seth Hubbard1, Elijah Sacchitella1, Nikhil Pokharel1, Stephen Polly1, Raymond Hoheisel2. 1Rochester Institute of Technology, Rochester, NY, USA.2Teravec, Technologies, VA, USA |
Abstract
We investigate candidate III–V device architectures that enable dual use operation as laser power converters and photovoltaic receivers (PV/LPC), as well as hybrid laser power converter-electroabsorption modulator (LPC/EAM) devices for simultaneous power generation and data modulation. Modeling efforts focus on bandgap selection and junction configuration to evaluate trade-offs between hybrid PV/LPC and LPC/EAM receiver architectures under sustained 1064 nm laser illumination. In the PV/LPC configuration, a 1.0 eV InGaAs laser power converter is examined for its potential to enable higher theoretical efficiency when integrated as the bottom junction of a three junction photovoltaic stack, at the cost of increased thermalization losses during laser power conversion. In contrast, the LPC/EAM architecture employs a 1.1 eV InGaAsP laser power converter to improve spectral matching to the laser wavelength and reduce thermal load during LPC operation, while sacrificing optimal multijunction photovoltaic performance in favor of enabling wavelength specific power conversion and data modulation through the electroabsorption modulator. These trade offs are evaluated in the context of lattice matched versus metamorphic material systems and their implications for voltage output, thermal management, and system-level integration constraints.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.
No part of this publication may be reproduced, distributed, or transmitted in any form or by any means, including photocopying, recording, or other electronic or mechanical methods, without the prior written permission of the author.