Frequency Up-conversion via Hot Carrier Luminescence
Researchers in the School of Engineering at the University of California, San Diego, have developed a new method for polarization-independent single photon wavelength up-conversion using optical coupling between a primary infrared (IR) Single Photon Avalanche Diode (SPAD) and a CMOS Silicon SPAD. A primary infrared photon induces an avalanche in the IP SPAD. The photons produced by hot carrier recombination are subsequently sensed by the Silicon SPAD, thus allowing for on-die data processing. Advantages over existing state-of-the-art approaches are minimal power dissipation (1 pW compared to 300 mW), compact solid state device fabricated using proven mass production methods, and can be scaled to large arrays. Reduced after-pulsing is also suppressed compared to present day SPADs.
Inventor: Bassi, Carl J. | Howe, Michael | Garver, Wayne
Priority Number: US8376956B2
IPC Current: A61B000500
US Class: 600558
Assignee Applicant: The Curators of the University of Missourilumbia
Title: Device and method for determining a cap arrangement indicating color discrimination
Usefulness: Device and method for determining a cap arrangement indicating color discrimination
Summary: Device for determining color discrimination of subject, for treating poor color vision.
Novelty: Device for determining color discrimination of subject, records detected position of each energized cap when subject places caps in positions of tray according to their colors and when cap is energized to indicate color discrimination
Biomedical
Medical Device
8637875
State Of Development This technology is in early stage development, but licensing is presently available. Patents pending. Additional Technologies by these Inventors Tech ID/UC Case 21155/2007-156-0 Related Cases 2007-156-0
USA
