Spatio-temporal evolution of femtosecond laser pulses in dielectric multi-layers controlling the damage behavior

Journal Article · 18 November 2021 · Proceedings of SPIE - The International Society for Optical Engineering

DOI: https://doi.org/10.1117/12.2600528 · OSTI ID:1855951

Lenzner, Matthias ^[1]; Oskouei, Amir Khabbazi ^[2]; Emmert, Luke A. ^[2]; Jupé, Marco ^[3]; Willemsen, Thomas ^[4]; Steinecke, Morten ^[3]; Ristau, Detlev ^[3]; Rudolph, Wolfgang ^[2]

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1. Lenzner Research, LLC, Tucson, AZ (United States); Lenzner Research LLC
2. Univ. of New Mexico, Albuquerque, NM (United States)
3. Laser Zentrum Hannover e.V. (Germany)
4. Laseroptik Garbsen GmbH (Germany)

When designing femtosecond laser mirrors, one tries to minimize the peak intensity within the high-index layers to increase the laser-induced damage threshold. Typically, the optimization procedure utilizes the electric field distribution in the layer stack generated by monochromatic irradiation. Furthermore, this approach is sufficient for certain structures like high-reflectors based on quarter-wave films. More complex structures require to take into account the exact evolution of the pulse parameters such as peak intensity and duration within the multi-layer system. We exemplify this by discussing a merit function that can be included in femtosecond optics design.

• Research Organization: Lenzner Research, LLC, Tucson, AZ (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Basic Energy Sciences (BES)
• Grant/Contract Number: SC0019788
• OSTI ID: 1855951
• Journal Information: Proceedings of SPIE - The International Society for Optical Engineering, Journal Name: Proceedings of SPIE - The International Society for Optical Engineering Vol. 11910; ISSN 0277-786X
• Publisher: SPIECopyright Statement
• Country of Publication: United States
• Language: English