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19 December 2003 Approaching the transform limit for x-ray laser pulses
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Abstract
Below saturation, X-ray laser output shows a reduction in pulse duration and frequency bandwidth as the gain-length product increases. Above saturation, both quantities can be expected to rebroaden. The duration of gain can be close to an order-of-magnitude longer than the output pulse duration. With gain-length products just below saturation, X-ray lasing at 13.9 nm in nickel-like silver has been measured with a pulse duration Δt of 3 - 4 ps and an estimated frequency bandwidth Δv of 5×1011 Hz. Such values imply that the pulses are close to transform limited with Δt Δv ≈ 1.5. Measurements of x-ray laser pulse-lengths and gain duration will described in this paper.
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Greg J. Tallents, Yousef Abou-Ali, Matthew Edwards, Quanli Dong, Pritesh Mistry, Geoffrey J. Pert, Arif Demir, Ciaran L. S. Lewis, Annie Klisnick, and Philippe Zeitoun "Approaching the transform limit for x-ray laser pulses", Proc. SPIE 5197, Soft X-Ray Lasers and Applications V, (19 December 2003); https://doi.org/10.1117/12.505912
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