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Multiple Quantum Wells for Optical Spectral Concentrator and Optical Energy Transport

Technology Application: Applications of this spectrally concentrated, fiber-transported output light include remote conversion of light energy to electricity for general purpose needs, as well as room heating, room illumination, or solar illumination for agriculture without first converting to electrical energy. Applications of this spectrally concentrated, fiber-transported output light include remote conversion of light energy to electricity for general purpose needs, as well as room heating, room illumination, or solar illumination for agriculture without first converting to electrical energy.

Detailed Technology Description: UC San Diego researchers have developed a method and device design for the spectral concentration of multi-wavelength light (e.g., solar energy ranging from far infrared to ultraviolet, into light of wavelengths within a narrow spectral width) and subsequent transport of the concentrated output light. This wavelength conversion is enabled in the invention by a semiconductor photo-detecting device that incorporates multiple quantum wells. The spectrally concentrated output light is such that its constituent wavelengths are suitable for transmission over optical fiber. In the example of sunlight impinging upon the device, the output light can be routed through optical fiber to irradiate photovoltaics with bandgaps matching the narrow output spectral width, thus augmenting the photocurrent and solar cell efficiency.

Supplementary Information: Patent Number: US20110247691A1
Application Number: US13125519A
Inventor: Yu, Paul Kit Lai | Chen, Winnie Victoria Wei-Ning
Priority Date: 24 Oct 2008
Priority Number: US20110247691A1
Application Date: 8 Jun 2011
Publication Date: 13 Oct 2011
IPC Current: H01L00310232 | H01S000534 | B82Y002000
US Class: 136259 | 359344 | 977755 | 977932
Assignee Applicant: The Regents of the University of California
Title: OPTICAL SPECTRAL CONCENTRATOR, SENSORS AND OPTICAL ENERGY POWER SYSTEMS
Usefulness: OPTICAL SPECTRAL CONCENTRATOR, SENSORS AND OPTICAL ENERGY POWER SYSTEMS
Summary: Integrated optical spectral concentrator device for optical power distribution system (claimed) used in various applications. Uses include but are not limited to optical power grid, remote solar illumination for residential, agricultural and commercial applications, remote heating of building structures, etc.
Novelty: Integrated optical spectral concentrator device for optical power distribution system, has waveguide with quantum well region that amplifies laser light of preset wavelength through photons produced by stimulated emissions