Design and application of chirped mirrors in the visible light band

Tianyue Wang; Junhao Xue; Hanyu Wang; Saiyu Luo

doi:10.1117/12.3056888

5 February 2025 Design and application of chirped mirrors in the visible light band

Tianyue Wang, Junhao Xue, Hanyu Wang, Saiyu Luo

Author Affiliations +

Proceedings Volume 13509, International Conference on Optical and Photonic Engineering (icOPEN 2024); 1350925 (2025) https://doi.org/10.1117/12.3056888
Event: International Conference on Optical and Photonic Engineering (icOPEN 2024), 2024, Foshan, China

Abstract

This study applies chirped mirrors to dispersion compensation of visible green ultrafast lasers. We have designed a high reflectivity chirped mirror composed of TiO₂/SiO₂ dielectric films with alternating high and low refractive indices. The number of layers is 42, and the reflectivity is greater than 99.9%. The center wavelength is 522nm, the bandwidth is 20nm, the average group delay dispersion is -90fs², and the amplitude is ±10fs². The thinnest layer is 4.65nm and the thickest layer is 259.48nm. Afterwards, the refractive index of low refractive index materials can be calculated using precise equations to optimize group delay dispersion oscillations within ±2fs². The more accurate the refractive index value of low refractive index materials, the smaller the delay dispersion oscillation of the designed chirped mirror group, providing a new method for dispersion compensation of visible light band lasers.

(2025) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Tianyue Wang, Junhao Xue, Hanyu Wang, and Saiyu Luo "Design and application of chirped mirrors in the visible light band", Proc. SPIE 13509, International Conference on Optical and Photonic Engineering (icOPEN 2024), 1350925 (5 February 2025); https://doi.org/10.1117/12.3056888

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