Bibliographic Details
| Title: |
Optimal Design and Analysis of Wide-Band Near-Infrared Hybrid Dielectric Gratings with High Transmission Efficiency |
| Authors: |
Ye Wang, Yongyi Chen, Li Qin, Lijun Wang |
| Source: |
Micromachines, Vol 15, Iss 11, p 1290 (2024) |
| Publisher Information: |
MDPI AG, 2024. |
| Publication Year: |
2024 |
| Collection: |
LCC:Mechanical engineering and machinery |
| Subject Terms: |
near-infrared, transmission grating, multilayer dielectric, fabrication tolerance, Mechanical engineering and machinery, TJ1-1570 |
| More Details: |
Since surface relief transmission gratings have very strict requirements on operators and use environment, according to the semiconductor laser external cavity spectral beam combining system, this paper proposes a design scheme for a semiconductor laser array spectral beam combining system based on the grating-external cavity. The finite element approach was used to create a wideband, high-efficiency fill-in multilayer dielectric transmission grating structure for a high-power spectrum beam combining system. The incidence angle, ridge height, duty cycle, and sidewall inclination angle of the transmission grating were tuned and evaluated, and a link between the transmission grating’s diffraction efficiency and grating characteristics was discovered. The calculated design of the high-power fused silica transmission grating has a negative first-order peak diffraction efficiency of 99.5% in the 800 nm range. In the spectral region of 765–872 nm, the transmission grating’s diffraction effectiveness exceeds 92%. The filled ultra-high diffraction efficiency multilayer dielectric transmission grating design addresses the issue of resistance to high-power lasers under complicated operating settings. It is intended to maintain a high diffraction efficiency even after several cleaning cycles, and it is an ideal component for high-power spectrum beam combining systems. |
| Document Type: |
article |
| File Description: |
electronic resource |
| Language: |
English |
| ISSN: |
2072-666X |
| Relation: |
https://www.mdpi.com/2072-666X/15/11/1290; https://doaj.org/toc/2072-666X |
| DOI: |
10.3390/mi15111290 |
| Access URL: |
https://doaj.org/article/1cd93c126db043d0b4b085570e0cf24b |
| Accession Number: |
edsdoj.1cd93c126db043d0b4b085570e0cf24b |
| Database: |
Directory of Open Access Journals |
