Interference coatings for ultra-high intensity near infrared lasers
This work is motivated by the present efforts in chirped pulse amplification near infrared lasers. Interference coatings on critical components fail at extremely low fluence, thus limiting power extraction from the amplifiers. We use ion beam sputtering to produce thin film multilayers of amorphous oxides We specialize in understanding the materials optical and structural properties and in optimizing them to achieve high laser damage resistance. Understanding the laser damage behavior of these coatings structures is paramount to increasing laser pulse energy.
High reflector with quarter wave layers (HL)30L designed for λ=1030 nm
Current Projects
- Control of stress in multilayer Dielectric Oxides for adaptive optics
- Interference Coatings for Near Infrared Ultra-Short Pulse Lasers
Selected publications
- H. Wang, A. Meadows, E. Jankowska, B. A. Reagan, J. J. Rocca and C. S. Menoni, “Single shot Laser induced damage of uncoated Yb:YAG crystal in air, vacuum and cryogenic conditions,” Proceedings Volume 10805, Laser-Induced Damage in Optical Materials 2018: 50th Anniversary Conference; 1080514 (2018) https://doi.org/10.1117/12.2501564.
- D. Schiltz, D. Patel, C. Baumgarten, B.A. Reagan, J.J. Rocca, C.S. Menoni, “Strategies to increase laser damage performance of Ta2O5/SiO2 mirrors by modifications of the top layer design,” Appl. Opt. 56, C136-C139 (2017).
- J. Stolz; J.E. Wolfe; P.B. Mirkarimi; J.A. Folta; J.J. Adams; M.G. Menor; N.E. Teslich; R. Soufli; C.S. Menoni; D. Patel, “Substrate and coating defect planarization strategies for high-laser-fluence multilayer mirrors,” Thin Solid Films 592, 216-220, Part: B, (2015).