Translator Disclaimer
26 April 2019 Scaling of petawatt-class lasers to multi-kHZ repetition rates
Author Affiliations +
Abstract
Petawatt laser applications, such as laser plasma acceleration, EUV generation, neutron generation, and materials processing are average-power limited. However, the highest average-power petawatt-class laser to date has an average power of less than 1 kW. Scaling Petawatt-class lasers beyond 10 kW of average power requires a paradigm shift in laser design. To date, average power scaling has been accomplished by increasing the repetition rate of single-shot lasers, in which each shot represents a complete pump/extraction cycle. We propose an alternative scheme, multipulse extraction, in which the gain medium is pumped continuously and the upper state population is extracted over many pulses. This method has two primary benefits: First, because efficient extraction is not necessary in a single pulse, the extraction fluence (and hence the B-integral) can be much lower than in a single pulse design. Second, there isn’t a need to pump within a single inverse lifetime, and therefore less expensive, less complex, and more efficient CW pump sources can be used. Multipulse extraction requires that the gain material have an inverse lifetime significantly less than the desired repetition rate. The design and optimization two multipulse extraction amplifiers, a 10 kHz-100 fs-30J amplifier and a 200 Hz-240 fs-240 J amplifier, will be presented. These point designs have applications in laser plasma acceleration and neutron generation, respectively
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
T. C. Galvin, A. Bayramian, K. D. Chesnut, A. Erlandson, C. W. Siders, E. Sistrunk, T. Spinka, and C. Haefner "Scaling of petawatt-class lasers to multi-kHZ repetition rates", Proc. SPIE 11033, High-Power, High-Energy, and High-Intensity Laser Technology IV, 1103303 (26 April 2019); https://doi.org/10.1117/12.2520981
PROCEEDINGS
8 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT

UV lifetime demonstrator for space-based applications
Proceedings of SPIE (May 04 2016)
Alkali lasers a new type of scalable high power...
Proceedings of SPIE (May 17 2010)
High-power KrF lasers
Proceedings of SPIE (January 31 1991)
A Model For The Nearly Single Lobed Far Field In...
Proceedings of SPIE (August 08 1988)
Advanced 2 micron solid state laser for wind and CO2...
Proceedings of SPIE (December 11 2006)
6 kW and 10 kW high power lamp pumped MOPA...
Proceedings of SPIE (February 06 2000)

Back to Top