N Aközbek et al 2006 New J. Phys. 8 177 doi:10.1088/1367-2630/8/9/177
Extending the supercontinuum spectrum down to 200 nm with few-cycle pulses
N Aközbek1, S A Trushin2, A Baltuška2, W Fuß2,5, E Goulielmakis2, K Kosma2, F Krausz2, S Panja2, M Uiberacker2, W E Schmid2, A Becker3, M Scalora4 and M Bloemer4
Show affiliationsBy focusing 805 nm pulses of low energy (0.2–1 mJ) into atmospheric-pressure argon, a supercontinuum is generated with a short-wavelength cutoff of 640, 250 and 210 nm for initial pulse durations of 45, 10 and 6 fs, respectively. It is shown numerically that the large shift of the UV cutoff and many features of the spectrum are caused by terms beyond the slowly-varying-envelope approximation (SVEA). Their effect on pulse compression and filament length is also discussed.
- PACS
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42.65.Jx Beam trapping, self-focusing and defocusing; self-phase modulation
42.65.Re Ultrafast processes; optical pulse generation and pulse compression
- Subjects
- Dates
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Issue 9 (September 2006)
Received 26 May 2006
Published 5 September 2006
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Extending the supercontinuum spectrum down to 200 nm with few-cycle pulses
N Aközbek et al 2006 New J. Phys. 8 177
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