Abstract

Sub-20-fs deep ultraviolet (DUV) pulses are generated by using nondegenerate, chirped-pulse four-wave mixing of the fundamental and second-harmonic pulses from a commercial Ti:sapphire amplifier in a ${\mathrm{CaF}}_2$ plate. The energy of the DUV pulses is 3.8 μJ, with a conversion efficiency from total pump energy to DUV of $\sim 3.8\%$. The DUV pulse is compressed using a pre-chirp, introduced via a fused silica window in the fundamental beam. The central wavelength of the DUV spectrum can be tuned from 257 to 277 nm by adjusting the cross angle between the two pump beams. The spectrum can reach a width of 16.8 nm, which can support a pulse duration of 8.7 fs.

© 2013 Optical Society of America

Sub-10 fs deep-ultraviolet pulses generated by chirped-pulse four-wave mixing

Yuichiro Kida, Jun Liu, Takahiro Teramoto, and Takayoshi Kobayashi
Opt. Lett. 35(11) 1807-1809 (2010)

Generation of sub-20-fs multicolor laser pulses using cascaded four-wave mixing with chirped incident pulses

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Generation of high-energy, sub-20-fs pulses in the deep ultraviolet by using spectral broadening during filamentation in argon

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Generation of 12 fs deep-ultraviolet pulses by four-wave mixing through filamentation in neon gas

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Generation of 2.5 μJ vacuum ultraviolet pulses with sub-50 fs duration by noncollinear four-wave mixing in argon

M. Ghotbi, M. Beutler, and F. Noack
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