Abstract

We present our latest results on the generation of ultrashort vacuum UV (VUV) pulses by nonresonant four-wave mixing of chirped broadband pulses generated by filamentation of the fundamental of a Ti:sapphire laser with relatively narrowband pulses at the third harmonic. Positive chirp at the broadband idler yields negatively chirped VUV pulses necessary to compensate for material dispersion of a $\mathrm{Mg}{\mathrm{F}}_2$ window in the VUV beam path. Pulse energies exceeding $400\mathrm{nJ}$ are available for time-resolved experiments. Pulse duration is measured by pump–probe ionization of Xe gas, providing the cross correlation between the fifth harmonic and the fundamental.

© 2011 Optical Society of America

Generation of sub-50-fs vacuum ultraviolet pulses by four-wave mixing in argon

Marcus Beutler, Masood Ghotbi, Frank Noack, and Ingolf Volker Hertel
Opt. Lett. 35(9) 1491-1493 (2010)

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

Masood Ghotbi, Peter Trabs, and Marcus Beutler
Opt. Lett. 36(4) 463-465 (2011)

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
Opt. Lett. 35(20) 3492-3494 (2010)

Generation of tunable sub-45 femtosecond pulses by noncollinear four-wave mixing

Masood Ghotbi, Peter Trabs, Marcus Beutler, and Frank Noack
Opt. Lett. 38(4) 486-488 (2013)

Simultaneous generation of sub-20 fs deep and vacuum ultraviolet pulses in a single filamentation cell and application to time-resolved photoelectron imaging

Takuya Horio, Roman Spesyvtsev, and Toshinori Suzuki
Opt. Express 21(19) 22423-22428 (2013)