Femtosecond Pulse Shaping Methodology and its Applications in Nonlinear Optical Microscopy
碩士 === 國立交通大學 === 光電工程系所 === 92 === In this thesis we demonstrate how to design and measure optical pulses. We demonstrate how to design and synthesize optical pulses by using Gerchberg-Saxton algorithm. A newly developed phase-freezing scheme for characterization and adaptive control of coherent o...
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| Format: | Others |
| Language: | en_US |
| Published: |
2004
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| Online Access: | http://ndltd.ncl.edu.tw/handle/52328667525304814816 |
| Summary: | 碩士 === 國立交通大學 === 光電工程系所 === 92 === In this thesis we demonstrate how to design and measure optical pulses. We demonstrate how to design and synthesize optical pulses by using Gerchberg-Saxton algorithm. A newly developed phase-freezing scheme for characterization and adaptive control of coherent optical pulses is described. The operational principle is based upon the concept that the highest peak intensity shall correspond to a complete frozen-phase state of all spectral components involved in a coherent optical pulse. Our experimental and theoretical results reveal this new scheme to be faster, accurate and more immune to the noise and laser power fluctuation than that with genetic algorithm. This freezing phase scheme had been employed for investigating three types of semiconductor saturable absorber Bragg reflectors (SBR) and the influence on the spectral phase distortion with subtle change of device structure was revealed. The application of the new phase freezing scheme on nonlinear optical microscopy is also presented.
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