Abstract
Generation of deep-ultraviolet femtosecond pulses by four-wave mixing through filamentation in neon gas was demonstrated. Fundamental (ω) and second-harmonic (2ω) pulses of 25 fs Ti:sapphire amplifier output were focused into neon gas, and 20μJ pulses with the center wavelength of 260 nm were produced by a four-wave mixing process, 2ω+2ω− ω→3ω through an ~15 cm filament. Additionally, pulses with an energy of 2μJ at 200 nm were generated, probably by a cascaded process, 3ω+2ω− ω→4ω. The 260 nm pulses were compressed by a grating-based compressor and characterized by a dispersion-free transient grating frequency-resolved optical gating. The estimated pulse width was 12 fs.
Original language | English |
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Pages (from-to) | 2481-2483 |
Number of pages | 3 |
Journal | Optics Letters |
Volume | 32 |
Issue number | 16 |
DOIs | |
Publication status | Published - Sep 1 2007 |
Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Atomic and Molecular Physics, and Optics