| Spin is an intrinsic feature of matter.Spin can be used for the detection of composition and structure of matter according to spin magnetic resonance.Besides,spin can also be used in quantum computing and high sensitivity sensing,which are also based on the spin magnetic resonance technology.The spin magnetic resonance has become one of the most important technologies to modern scientific research.Nuclear magnetic resonance(NMR),electron paramagnetic resonance(EPR)and optically detected magnetic resonance(ODMR)are the most popular spin magnetic resonance techniques.With the development of spin magnetic resonance,the control of spin has become more and more delicate,and the processing of recording spin signal has become more and more complicate,which brings great challenges to the control and readout electronics in spin magnetic resonance spectrometers.The limitations of the control and readout electronics in the resolution of timing control,the precision and stability of synchronization,the speed of parameter changing,and the ability of real-time signal processing have hindered the further development of spin magnetic resonance research.To develop a control and readout electronic system for spin magnetic resonance spectrometers,and to clear off the obstacles brought by the limitation of existing devices,researchers conduct the investigation on integrated control and readout electronic system for spin magnetic resonance spectrometers and the timing control technology.The integrated control and readout electronic system is designed based on field programmable gate array(FPGA)and other kinds of application specific integrated circuit(ASIC),including digital to analog converter(DAC)and analog to digital converter(ADC).And the integrated electronic system has been applied in NMR spectrometer,EPR spectrometer,NV-ODMR spectrometer,and spin noise spectrum measurement.The timing control technology is required to realize a sub-nanosecond resolution.The time folding alignment method and the multi-stage time interpolation method are originally proposed for this goal in this thesis,and a picosecond timing control resolution is achieved.The main contributions of this PhD thesis are as follows:·the design of the integrated control and readout electronic system for spin magnetic resonance spectrometers with high precision synchronization and powerful real time data processing ability,and the applications of the integrated system in NMR spectrometer,EPR spectrometer,NV-ODMR spectrometer and spin noise measurement.·the research on the picosecond resolution timing control technology,and the propose of two innovative timing control methods,the time folding alignment method and the multi-stage time interpolation method.The time folding alignment method breaks the resolution limitation of time interpolation method and can achieve better linearity.The multi-stage time interpolation method enables the usage of ultra high resolution time interpolation circuit,and improves the resolution of time interpolation method.The timing control resolutions are 5 ps for the time folding alignment method and 3 ps for the multi-stage time interpolation method. |
