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14 March 2023 High energy operation of a diode-pumped Tm:YLF laser
Issa Tamer, Brendan A. Reagan, Frantisek Batysta, Leily Kiani, Zbynek Hubka, Thomas Galvin, Emily Sistrunk, Drew Willard, Andrew Church, Hansel Neurath, Justin Galbraith, Glenn Huete, Thomas Spinka
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Proceedings Volume 12401, High Power Lasers for Fusion Research VII; 1240109 (2023) https://doi.org/10.1117/12.2649103
Event: SPIE LASE, 2023, San Francisco, California, United States
Abstract
We present experimental demonstrations of the energy density storage and extraction capabilities of Tm:YLF using a table-top diode-pumped system. Here, a Tm:YLF-based oscillator, producing mJ-class pulse energies within both short (nanosecond) and long (millisecond) duration pulses, seeds a single far-field multiplexed power amplifier. The amplifier produced pulse energies up to 21.7 J in 20 ns (>1 GW peak power) using a 4-pass configuration, and 108.3 J in a long duration pulse using a 6-pass configuration. Additionally, the system was reconfigured and operated in a burst mode, amplifying a 6.8 kHz few-ms duration burst of 36 pulses up to 3.6 kW average power. An optical-to-optical efficiency of 19% was achieved during the quasi-steady-state amplification, with an individual pulse fluence over an order of magnitude lower than the saturation fluence.
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Issa Tamer, Brendan A. Reagan, Frantisek Batysta, Leily Kiani, Zbynek Hubka, Thomas Galvin, Emily Sistrunk, Drew Willard, Andrew Church, Hansel Neurath, Justin Galbraith, Glenn Huete, and Thomas Spinka "High energy operation of a diode-pumped Tm:YLF laser", Proc. SPIE 12401, High Power Lasers for Fusion Research VII, 1240109 (14 March 2023); https://doi.org/10.1117/12.2649103
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KEYWORDS
Energy efficiency
Laser crystals
Pulsed laser operation
Diode pumped solid state lasers
High power lasers
Laser amplifiers
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