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NIU Hong-kun, ZHANG Jing, FU Xiu-hua, MA Guo-shui, JIN Hai-jun, YANG Fei. Development of phase delay mirrors for femtosecond laser systems[J]. Chinese Optics. doi: 10.37188/CO.2024-0015
Citation: NIU Hong-kun, ZHANG Jing, FU Xiu-hua, MA Guo-shui, JIN Hai-jun, YANG Fei. Development of phase delay mirrors for femtosecond laser systems[J]. Chinese Optics. doi: 10.37188/CO.2024-0015

Development of phase delay mirrors for femtosecond laser systems

doi: 10.37188/CO.2024-0015
Funds:  Supported by Science and Technology Development Plan Project of Jilin Province (No. 20230101008JC); Excellent Member of Youth Innovation Promotion Association CAS (No. Y202053); International Partnership Program of the Chinese Academy of Sciences (No. 181722KYSB20200001); National Natural Science Foundation of China (NSFC) (No. 11973040)
  • Received Date: 15 Jan 2024
  • Accepted Date: 15 Mar 2024
  • Available Online: 17 May 2024
  • Phase delay mirrors were designed and prepared to regulate femtosecond laser systems’ group-delay dispersion (GDD). This paper systematically investigates the principle of compensating group-delay dispersion by phase-delay mirrors. Nb2O5 and SiO2 were used as the materials with high and low refractive indices. The group-delay dispersion curves were smoothed out by pairing the phase-delay mirrors with their complementary mirrors. The phase-delayed mirrors with phase modulation data of −800 GDD were prepared, and the reflectivity reached more than 99% in the range of 900 nm−1100 nm. The bandwidth adjustment problem of femtosecond laser systems is solved to meet the requirements of femtosecond lasers


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