Half-kilowatt high-energy third-harmonic conversion to 50 J @ 10 Hz at 343 nm

Jan Pilar; Martin Divoky; Jonathan Phillips; Martin Hanus; Petr Navratil; Ondrej Denk; Patricie Severova; Tomas Paliesek; Danielle Clarke; Martin Smrz; Thomas Butcher; Chris Edwards; Tomas Mocek

doi:10.1017/hpl.2024.80

Journals >High Power Laser Science and Engineering >Volume 12 >Issue 6 >Page 06000e96 > Article

High Power Laser Science and Engineering
Vol. 12, Issue 6, 06000e96 (2024)

Half-kilowatt high-energy third-harmonic conversion to 50 J @ 10 Hz at 343 nm

Jan Pilar^1、*, Martin Divoky¹, Jonathan Phillips², Martin Hanus¹, Petr Navratil¹, Ondrej Denk¹, Patricie Severova¹, Tomas Paliesek¹, Danielle Clarke², Martin Smrz¹, Thomas Butcher², Chris Edwards², and Tomas Mocek¹

Author Affiliations

¹HiLASE Centre, Institute of Physics of the Czech Academy of Sciences, Dolni Brezany, Czech Republic

²Central Laser Facility, STFC Rutherford Appleton Laboratory, Didcot, UK

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DOI: 10.1017/hpl.2024.80 Cite this Article Set citation alerts

Jan Pilar, Martin Divoky, Jonathan Phillips, Martin Hanus, Petr Navratil, Ondrej Denk, Patricie Severova, Tomas Paliesek, Danielle Clarke, Martin Smrz, Thomas Butcher, Chris Edwards, Tomas Mocek, "Half-kilowatt high-energy third-harmonic conversion to 50 J @ 10 Hz at 343 nm," High Power Laser Sci. Eng. 12, 06000e96 (2024) Copy Citation Text

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Abstract

We present results of frequency tripling experiments performed at the Hilase facility on a cryogenically gas cooled multi-slab ytterbium-doped yttrium aluminum garnet laser system, Bivoj/DiPOLE. The laser produces high-energy ns pulses at 10 Hz repetition rate, which are frequency doubled using a type-I phase-matched lithium triborate (LBO) crystal and consequently frequency summed using a type-II phase-matched LBO crystal. We demonstrated a stable frequency conversion to 343 nm at 50 J energy and 10 Hz repetition rate with conversion efficiency of 53%.

Keywords

diode-pumped solid-state laser frequency conversion high-average-power lasers high-energy lasers

$$\begin{align}&{T}_{\mathrm{SHG}-1\omega}=99.0\%, \qquad {T}_{\mathrm{in}-\mathrm{THG}-1\omega}=99.5\%,\nonumber\\& {T}_{\mathrm{SHG}-\mathrm{2}\omega }=99.0\%, \qquad {T}_{\mathrm{in}-\mathrm{THG}-\mathrm{2}\omega }=99.5\%,\nonumber\\& \qquad\qquad {T}_{\mathrm{out}-\mathrm{THG}-1\omega}=99.5\%,\nonumber\\& \qquad\qquad {T}_{\mathrm{out}-\mathrm{THG}-\mathrm{2}\omega }=97.0\%,\nonumber\\& \qquad\qquad {T}_{\mathrm{out}-\mathrm{THG}-3\omega}=98.0\%,\end{align}$$

((1))

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$$\begin{align}&{E}_{3\omega}={T}_{\mathrm{out}-\mathrm{THG}-3\omega}\nonumber\\&\quad \cdot\left({E}_{\mathrm{in}\mathrm{put}}\cdot {T}_{\mathrm{SHG}}\cdot {T}_{\mathrm{in}-\mathrm{THG}}-\frac{E_{1\omega }}{T_{\mathrm{out}-\mathrm{THG}-1\omega}}-\frac{E_{2\omega }}{T_{\mathrm{out}-\mathrm{THG}-2\omega}}\right),\end{align}$$

((2))