公开(公告)号：US20230204696A1

公开(公告)日：2023-06-29

申请号：US18146984

申请日：2022-12-27

申请人： TOKYO INSTITUTE OF TECHNOLOGY

发明人： Yuji HATANO ,  Takayuki IWASAKI ,  Mutsuko HATANO ,  Jaewon SHIN

IPC分类号： G01R33/32

CPC分类号： G01R33/323

摘要： A sensor includes two magnetic sensors detecting a magnetic field around an object, and outputting at least one of a magnetic field signal and a temperature signal, an optical system emitting the excitation light to the two magnetic sensors, and a processor calculating a difference between a magnetic fields corresponding to the magnetic field signal detected by the two magnetic sensors, wherein each of the magnetic sensors includes an element disposed around the object and having color centers, an antenna radiating a microwave magnetic field to the element, an optical sensor detecting an intensity of a fluorescence generated by the element, and outputting an intensity signal, and a controller calculating at least one of a magnetic field and temperature around the measurement object, and output at least one of a magnetic field signal indicating the calculated magnetic field and a temperature signal indicating the calculated temperature to the processor.

公开(公告)号：US20230152258A1

公开(公告)日：2023-05-18

申请号：US17915987

申请日：2021-03-17

申请人： TOKYO INSTITUTE OF TECHNOLOGY

发明人： Yuji HATANO ,  Takayuki IWASAKI ,  Mutsuko HATANO

IPC分类号： G01N24/10 ,  G01N24/00

CPC分类号： G01N24/10 ,  G01N24/006

摘要： A physical state measurement apparatus includes a main solid material which generates fluorescence by excitation light from a light source part. A microwave application part applies microwaves to the main solid material so as to control an electron state of the main solid material. A detection part detects the physical state of an object to be measured by the fluorescence from the main solid material. A feedback part has a solid material for feedback and a control part and detects a difference in amplitude between operating points on a low-frequency side and a high-frequency side of a lowering portion of a spectrum amplitude centered on a resonance frequency of an electron spin resonance spectrum of fluorescence from the solid material for feedback and feedback-controls the microwave application part such that the difference becomes zero.