Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Optical Rectification"”.
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Optical rectification in semiconductor waveguides
In this thesis, we study optical to microwave conversion and generation of ultrashort electrical pulses by the use of optical rectification at telecommunication wavelengths, λ = 1550 nm. By using optical rectification, an electromagnetic pulse is generated in a completely passive semiconductor …
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Theory of terahertz generation by optical rectification
… sources and a hundred times larger than optical/near infra-red sources may be categorized as high-field Terahertz (THz) sources. By virtue of their large electromagnetic field amplitudes and relatively long wavelengths, they are uniquely amenable for electron acceleration, coherent X-ray …
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Theory of optical rectification in a travelling wave structure
… thesis is concerned with the interaction of an optical wave with a microwave in a waveguiding structure coupled by a second order nonlinearity. Emphasis is laid upon the generation of ultrashort electrical transients via optical rectification (OR) as well as cascading effects due to the …
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High field, high efficiency terahertz pulse generation by optical rectification
… in development of sources based on photonics. Optical rectification in lithium niobate is an attractive approach, because it supports high generation efficiencies, uses low cost, bulk LN crystals, and is powered by common Yb-doped lasers at wavelengths of around 1 Pm. In this work, a …
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Experimental and Numerical Investigations into Terahertz Time-Domain Spectroscopy
… by describing the theory behind the nonlinear optical mechanisms through which we generate and detect short pulses of THz radiation. Based on a coherent electro-optic detection scheme, our measurements trace out the oscillating electric field of the THz pulses generated from the optical mixing …
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The generation of high field terahertz radiation and its application in terahertz nonlinear spectroscopy
… terahertz (THz) pulse generation via optical rectification in a LiNbO3 (LN) crystal. I also developed a method for the non reconfigurable generation of high-intensity multiple-cycle THz fields aimed to more efficiently deliver THz energy to resonant samples. A novel free-space …
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Studies on Optically Induced DC-Voltage in Thin Film Structures
… on rectenna configurations and nonlinear optical rectification process showed promising results for photovoltage generation in a broadband scheme. A photodetector that combines polarization sensitivity and circularly polarized light sensitivity in the near infrared region was fabricated …