Ultra-Low Noise Quad Photoreceiver for Space Based Laser Interferometric Gravity Wave Detection

Award Information
Agency:
National Aeronautics and Space Administration
Branch
n/a
Amount:
$99,998.00
Award Year:
2009
Program:
SBIR
Phase:
Phase I
Contract:
NNX09CD48P
Agency Tracking Number:
084566
Solicitation Year:
2008
Solicitation Topic Code:
S1.05
Solicitation Number:
n/a
Small Business Information
Discovery Semiconductors, Inc.
119 Silvia Street, Ewing, NJ, 08628-3200
Hubzone Owned:
N
Socially and Economically Disadvantaged:
Y
Woman Owned:
N
Duns:
824781769
Principal Investigator:
Shubhashish Datta
Principal Investigator
(609) 434-1311
sdatta@chipsat.com
Business Contact:
Abhay Joshi
Business Official
(609) 434-1311
Abhay@chipsat.com
Research Institution:
n/a
Abstract
Gravity wave detection using space-based long-baseline laser interferometric sensors imposes stringent noise requirements on the system components, including the large area photoreceiver front ends. The proposed innovation utilizes dual depletion region technology to produce a large area (1mm diameter) 2x2 quad p-i-n InGaAs photodiode array having ~2.1pF capacitance per quadrant. The small capacitance of the quad photodiode array is leveraged in combination with a low-noise JFET-input operational amplifier to manufacture ultra-low noise quad photoreceiver array. Each element (quadrant) of the photoreceiver array will have an input equivalent current noise <2pA/sq.rt. Hz in a frequency range of 2 to 20MHz. This will enable shot noise dominated performance at an optical local oscillator power of ~100mW per quadrant.

* information listed above is at the time of submission.

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