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Photodetection at or below 1 micron wavelengths (Conference Presentation)
Author(s): Madison Woodson; Steven Estrella; Kenneth Hay; Angsuman Roy; Keye Sun; Jesse Morgan; Andreas Beling; R. Jacob Baker; Daniel Renner; Milan Mashanovitch
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Paper Abstract

Links at 1 micron offer key advantages over longer wavelength links. Both ultra-stable, low noise Nd:YAG lasers and high power efficiency, temperature-stable GaAs lasers operate at wavelengths around 1 micron. These components are particularly beneficial for quantum optical systems and links which require stability over a wide range of temperatures, such as are required in avionics. However, a key component missing in these 1 micron photonic links is a high-power photodiode receiver with high linearity and high quantum efficiency. Freedom Photonics and the University of Virginia have collaborated to develop photodiodes which fill this need. The photodetectors are based on an optimized vertically illuminated modified uni-traveling carrier (MUTC) photodiode technology. We report devices with quantum efficiencies in excess of 80% at 1064 nm, with a 3-dB bandwidth of 28 GHz, for a 20µm diameter device. The same device size handles very high power, with a 1-dB compression of >16 dBm RF power at a 64-mA photocurrent. These photodiodes have a major impact on peak performance of a photonic link, supporting high link gain and large bandwidths. Additionally, the high linearity of these devices minimizes noise and signal distortion, maximizing spurious-free dynamic range (SFDR). These are the first photodiodes of this type which have been packaged and made commercially available for this target wavelength.

Paper Details

Date Published: 8 March 2019
Proc. SPIE 10912, Physics and Simulation of Optoelectronic Devices XXVII, 1091210 (8 March 2019); doi: 10.1117/12.2510627
Show Author Affiliations
Madison Woodson, Freedom Photonics, LLC (United States)
Steven Estrella, Freedom Photonics, LLC (United States)
Kenneth Hay, Freedom Photonics, LLC (United States)
Angsuman Roy, Freedom Photonics, LLC (United States)
Keye Sun, Univ. of Virginia (United States)
Jesse Morgan, Univ. of Virginia (United States)
Andreas Beling, Univ. of Virginia (United States)
R. Jacob Baker, Univ. of Nevada, Las Vegas (United States)
Daniel Renner, Freedom Photonics, LLC (United States)
Milan Mashanovitch, Freedom Photonics, LLC (United States)

Published in SPIE Proceedings Vol. 10912:
Physics and Simulation of Optoelectronic Devices XXVII
Bernd Witzigmann; Marek Osiński; Yasuhiko Arakawa, Editor(s)

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