Version 1
: Received: 3 September 2024 / Approved: 3 September 2024 / Online: 4 September 2024 (16:20:20 CEST)
How to cite:
Wang, Y.; Chen, Y.; Qin, L.; Wang, L. Optimal Design and Analysis of Wide-band Near-infrared Hybrid Dielectric Gratings with High Transmission Efficiency. Preprints2024, 2024090324. https://doi.org/10.20944/preprints202409.0324.v1
Wang, Y.; Chen, Y.; Qin, L.; Wang, L. Optimal Design and Analysis of Wide-band Near-infrared Hybrid Dielectric Gratings with High Transmission Efficiency. Preprints 2024, 2024090324. https://doi.org/10.20944/preprints202409.0324.v1
Wang, Y.; Chen, Y.; Qin, L.; Wang, L. Optimal Design and Analysis of Wide-band Near-infrared Hybrid Dielectric Gratings with High Transmission Efficiency. Preprints2024, 2024090324. https://doi.org/10.20944/preprints202409.0324.v1
APA Style
Wang, Y., Chen, Y., Qin, L., & Wang, L. (2024). Optimal Design and Analysis of Wide-band Near-infrared Hybrid Dielectric Gratings with High Transmission Efficiency. Preprints. https://doi.org/10.20944/preprints202409.0324.v1
Chicago/Turabian Style
Wang, Y., Li Qin and Lijun Wang. 2024 "Optimal Design and Analysis of Wide-band Near-infrared Hybrid Dielectric Gratings with High Transmission Efficiency" Preprints. https://doi.org/10.20944/preprints202409.0324.v1
Abstract
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 of semiconductor laser array spectral beam combining system based on 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 800nm 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’s intended to maintain a high diffraction efficiency even after several cleaning cycles, and it’s an ideal component for high-power spectrum beam combining systems.
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
