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8 June 2023 MLD-grating-based pulse compressors for high average power Ti:Sa lasers (Conference Presentation)
Christian M. Werle, Cora Braun, Guido Palmer, Andreas R. Maier
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Proceedings Volume PC12577, High-power, High-energy Lasers and Ultrafast Optical Technologies; PC1257706 (2023) https://doi.org/10.1117/12.2669522
Event: SPIE Optics + Optoelectronics, 2023, Prague, Czech Republic
Abstract
KALDERA is DESY’s new flagship laser to drive a next-generation of laser-plasma accelerators, operating at kHz rep-rates and thus enabling fast active stabilization and feedback techniques to enhance the LPA performance. With this increase in average power, thermal management - especially in the final pulse compressor - becomes increasingly challenging. One potential solution is the use of multilayer dielectric (MLD) gratings, which absorb much less laser power and can thus reduce grating-deformation-induced pulse degradation significantly. We present a prototype MLD compressor, operated in an out-of-plane geometry, and a matched pulse stretcher based on transmission gratings, which act as a demonstrator for the KALDERA CPA system. We will show the design process of the system and present spectral and temporal characterization measurements performed at the system, including spectral efficiency, pulse shape, contrast, and polarimetry analysis. These measurements show that such a system can provide high-quality pulses at sub-30fs durations.
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Christian M. Werle, Cora Braun, Guido Palmer, and Andreas R. Maier "MLD-grating-based pulse compressors for high average power Ti:Sa lasers (Conference Presentation)", Proc. SPIE PC12577, High-power, High-energy Lasers and Ultrafast Optical Technologies, PC1257706 (8 June 2023); https://doi.org/10.1117/12.2669522
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KEYWORDS
Laser development
Pulsed laser operation
Laser applications
Pulse signals
Laser stabilization
Laser optics
Optical gratings
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