Split and delay correlation spectroscopy with a visible light - Rasch, Marten
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The development and performance of a setup constructed with the aim for the split pulse photon correlation spectroscopy is presented in this work. The double pulse time structure is accomplished with help of an Acusto Optical Modulator crystal, which mimics the splitting and delaying of photon pulses. The setup provides double pulses and allows to control the pulse width and delay and to synchronize them into one camera exposure window. The performance of the setup was successfully verified in a proof of principle experiment with a model system of polystyrene particles following Brownian…mehr

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Produktbeschreibung
The development and performance of a setup constructed with the aim for the split pulse photon correlation spectroscopy is presented in this work. The double pulse time structure is accomplished with help of an Acusto Optical Modulator crystal, which mimics the splitting and delaying of photon pulses. The setup provides double pulses and allows to control the pulse width and delay and to synchronize them into one camera exposure window. The performance of the setup was successfully verified in a proof of principle experiment with a model system of polystyrene particles following Brownian motion. The measured radius of particles obtained with from the split pulse experiment (Rh=(2.567 +- 0.097)µm) is in agreement with the particle size provided by the manufacturer (R=(2.26 +- 0.08)µm). The achieved results show higher statistics compared to a standard Dynamic Light Scattering measurement.
Autorenporträt
Marten Rasch was born in 1992 in Hamburg, where he started in 2012 his physic studies at the Universität Hamburg. This work is a part of the Bachelor degree work and was performed at the FS-CXS group at Deutsches Elektronen Synchrotron (DESY).