| Autor: |
Chunxu Ding, Rongjun Shao, Yuan Qu, Jiamiao Yang |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
JPhys Photonics, Vol 6, Iss 4, p 045012 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2515-7647 |
| DOI: |
10.1088/2515-7647/ad7caf |
| Popis: |
Digital optical phase conjugation (DOPC) is considered as a promising solution to achieve optical focusing against scattering. The implementation of DOPC based on the digital micromirror device (DMD) has been proven to have great potential, supporting a large number of modulation modes and a high modulation rate. However, the accuracy of optical alignment seriously affects the focusing contrast, limiting the applications of DMD-based DOPC systems. Here we demonstrate a simple alignment protocol including a marker-assisted tuning and an embedded compensation. Our approach can realize an exact pixelwise optical conjugation between the DMD and detector, as well as a rapid compensation for aberrations and minor misalignment. Experimental results show that the proposed alignment protocol improves the focusing contrast to 66% of the highest value predicted in the theory. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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