Ultra-low Noise, High Bandwidth, 1550nm HgCdTe APD

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$70,000.00
Award Year:
2004
Program:
SBIR
Phase:
Phase I
Contract:
NNG04CA94C
Award Id:
72029
Agency Tracking Number:
034977
Solicitation Year:
n/a
Solicitation Topic Code:
n/a
Solicitation Number:
n/a
Small Business Information
614 SW 11th Avenue, Portland, OR, 97205
Hubzone Owned:
N
Minority Owned:
N
Woman Owned:
N
Duns:
124348652
Principal Investigator:
JamesGates
Principal Investigator
(503) 243-4633
jimgates@voxtel-inc.com
Business Contact:
GeorgeWilliams
Business Official
(503) 243-4633
georgew@voxtel-inc.com
Research Institute:
n/a
Abstract
Voxtel Inc. proposes to optimize the design of a large area, 1.55?m sensitive HgCdTe avalanche photodiode (APD) that achieves high gain with nearly no excess noise. By optimizing the APD device structure and by exploiting the most recent insight into the material?s ionization characteristics, we have engineered the vertical HgCdTe APD for nearly noiseless gain (ultra low k) with high bandwidth and with low dark current. As large area photodetectors necessarily have high dark current and increased capacitance, we will tradeoff the performance of a large area detector design with that of a pixilated design. A pixilated detector can reduce the amplifier noise and dark current in the local of the amplified events to sufficiently low levels for photon counting. Through the use of our low noise, high unit cell density, amplifier integrated circuits, we will demonstrate nearly ideal receiver performance for space optical communications applications.

* information listed above is at the time of submission.

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