Back to Search
Start Over
Optimized multi-exposure optical path with a single laser pulse for the measurement of ultra-high speed
- Source :
- AIP Advances, Vol 11, Iss 4, Pp 045101-045101-6 (2021)
- Publication Year :
- 2021
- Publisher :
- AIP Publishing, 2021.
-
Abstract
- High-speed measurements, particularly close to the velocity of light, have always been a great challenge in the field of experimental measurement. Although traditional high-speed measurement methods based on imaging technology can achieve millions of frames per second, they face the problem that the field of view decreases with an increase in the frame rate, which is difficult to overcome in a short period. In this study, a closed multi-exposure optical path is designed first based on a 600 ps pulse laser that realizes the continuous measurement of sub-light velocity and is not subject to the field of view. The path can also be adjusted with respect to time, accurate up to sub-nanoseconds. Second, it is found that the accuracy and resolution of the present method are related to the used pulse laser and camera. Once the performances of the pulse laser and the camera are improved, the corresponding range of measurement of the velocity can be improved further. Compared with traditional pumping technologies, the proposed technology achieves continuous velocity measurement with the utilization rate of laser energy as high as 100%. Finally, we use this novel optical system to determine the flux avalanche velocity of the YBa2Cu3O7-x superconducting thin film, and a highest speed of 323.5 Km/s is obtained.
- Subjects :
- 010302 applied physics
Materials science
Field (physics)
business.industry
Physics
QC1-999
General Physics and Astronomy
Field of view
02 engineering and technology
021001 nanoscience & nanotechnology
Frame rate
Laser
01 natural sciences
Pulsed laser deposition
Pulse (physics)
law.invention
Optics
Optical path
law
0103 physical sciences
0210 nano-technology
business
Energy (signal processing)
Subjects
Details
- ISSN :
- 21583226
- Volume :
- 11
- Database :
- OpenAIRE
- Journal :
- AIP Advances
- Accession number :
- edsair.doi.dedup.....f334c0b56751030fc6f9644f178d0526