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Accession Number ADA562207
Title Nonlinear Frequency Conversion in III-V Semiconductor Photonic Crystals.
Publication Date Mar 2012
Media Count 160p
Personal Author K. Rivoire
Abstract Nonlinear optical processes provide a physical mechanism for converting the frequency of light. This allows the generation of tunable light sources at wavelengths inaccessible with lasers, leading to a diverse set of applications in fields such as spectroscopy sensing, and metrology. To make these processes efficient has conventionally required relatively exotic materials that are incompatible with state of the art nanofabrication resulting in large-area devices that operate at high optical powers and cannot be integrated with on-chip optical and electronic circuits. This dissertation shows how optical nanocavities, by localizing light into sub-cubic optical wavelength volumes with long photon storage times, can greatly enhance the efficiency of nonlinear frequency conversion processes in III-V semiconductors, while simultaneously shrinking the device footprint, reducing the operating power, and providing a scalable on-chip platform. This approach also enables on- chip quantum frequency conversion interfaces, which are crucial for the construction of quantum networks. First, photonic crystal nanocavities in gallium phosphide are shown to generate second harmonic radiation with only nanowatts of coupled optical powers, and efficiency many orders of magnitude greater than in previous nanoscale devices. This approach is then extended to demonstrate sum-frequency generation in GaP photonic crystal cavities with multiple cavity modes, as well as broadband upconversion employing photonic crystal waveguides. The nanocavity-enhanced second harmonic generation is then integrated with a single quantum dot to create a single photon source triggered at 300 MHz by a telecommunication wavelength laser coupled with an external electro-optic modulator, a simpler and faster configuration than standard approaches.
Keywords Broadband
Chips(Electronics)
Circuits
Efficiency
Electronic equipment
Fabrication
Frequency conversion
Harmonic generators
Harmonics
High power
Integrated systems
Light sources
Nanotechnology
Photonic crystals
Photons
Quantum theory
Second harmonic generation
Semiconductors


 
Source Agency Non Paid ADAS
NTIS Subject Category 49B - Circuits
49H - Semiconductor Devices
46D - Solid State Physics
Corporate Author Stanford Univ., CA. Edward L. Ginzton Lab. of Physics.
Document Type Thesis
Title Note Doctoral thesis.
NTIS Issue Number 1224
Contract Number N/A

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