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Measurement of the duration of X-ray lasing pumped by an optical laser pulse of picosecond duration

Abou-Ali, Y., Tallents, G.J., Edwards, M., King, R.E., Pert, G.J., Pestehe, S.J., Strati, F., Keenan, R., Lewis, C.L.S., Topping, S., Guilbaud, O., Klisnick, A., Ros, D., Clarke, R., Neely, D., Notley, M. and Demir, A. (2003) Measurement of the duration of X-ray lasing pumped by an optical laser pulse of picosecond duration. Optics Communications, 215 (4-6). pp. 397-406. ISSN 0030-4018

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Measurements of the duration of X-ray lasing pumped with picosecond pulses from the VULCAN optical laser are obtained using a streak camera with 700 fs temporal resolution. Combined with a temporal smearing due to the spectrometer employed, we have measured X-ray laser pulse durations for Ni-like silver at 13.9 nm with a total time resolution of 1.1 ps. For Ni-like silver, the X-ray laser output has a steep rise followed by an approximately exponential temporal decay with measured full-width at half-maximum (FWHM) of 3.7 (±0.5) ps. For Ne-like nickel lasing at 23.1 nm, the measured duration of lasing is ≈10.7 (±1) ps (FWHM). An estimate of the duration of the X-ray laser gain has been obtained by temporally resolving spectrally integrated continuum and resonance line emission. For Ni-like silver, this time of emission is ≈22 (±2) ps (FWHM), while for Ne-like nickel we measure ≈35 (±2) ps (FWHM). Assuming that these times of emission correspond to the gain duration, we show that a simple model consistently relates the gain durations to the measured durations of X-ray lasing.

Item Type: Article
Institution: The University of York
Academic Units: The University of York > Physics (York)
Depositing User: York RAE Import
Date Deposited: 12 Mar 2009 14:59
Last Modified: 12 Mar 2009 14:59
Published Version: http://dx.doi.org/10.1016/S0030-4018(02)02246-0
Status: Published
Publisher: Elsevier Science B.V.
Identification Number: 10.1016/S0030-4018(02)02246-0
URI: http://eprints.whiterose.ac.uk/id/eprint/7120

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