| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7924469 | Optics Communications | 2018 | 6 Pages |
Abstract
A modified small-angle measurement system is proposed to improve the angle measurement resolution by selecting a rotatable pentagonal prism to replace the right-angle prism based on the original small-angle measurement system. In our measurement system, the right-angle side length of pentagonal prism is crucial to the measurement resolution. For the pentagonal prism with 2Â cm side length, the resolution can reach 64.68 urad, while the resolution is up to 30.48 urad for the pentagonal prism with 4Â cm side length. Therefore, it is possible to obtain higher measurement resolution by choosing the pentagonal prism with a larger side length within a proper range as the key optical element in the modified small-angle measurement system, so as to achieve the purpose of system optimization. In addition, the small-angle measurement system with a rotatable pentagonal prism we have designed can be helpful and referential to the future study of self-mixing interference technology with high-resolution requirements on the basis of different prisms.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
Bo Yang, Chenchen Wang, Jun Zhang, Jiangli Ni,