An X-band pulsed electron paramagnetic resonance spectrometer with time resolution improved by a field-programmable-gate-array based pulse generator
| Autor: | Zhifu Shi, Jiangfeng Du, Xi Qin, Xing Rong, Dai Yingqiu, Shiwei Mu |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Spectrometer Pulse (signal processing) business.industry Pulsed EPR Pulse generator X band PIN diode Pulse duration 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences law.invention Optics law 0103 physical sciences Digital storage oscilloscope 010306 general physics 0210 nano-technology business Instrumentation |
| Zdroj: | Review of Scientific Instruments. 89:125104 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.5048551 |
| Popis: | We report an X-band pulsed electron paramagnetic resonance (EPR) spectrometer using a Field-Programmable-Gate-Array (FPGA) based pulse generator. The microwave (MW) pulse length and pulse-pulse interval can be adjusted with 50 ps time resolution. A FPGA based pulse generator is utilized to achieve such time resolution. There are eight pulse channels integrated in the pulse generator. Each channel outputs rectangular pulses with 50 ps time resolution. The spectrometer includes a pulse forming unit, where four high-speed PIN diode switches are controlled by the pulse generator to generate MW pulses. A commercial digital storage oscilloscope is used to record the EPR signal. A customized software is developed to control the components of the spectrometer and to perform data processing task. The usefulness of high time resolution is demonstrated by the results of Rabi oscillation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|