Double-pulse excitation of x-ray capillary lasers

Sergei V. Kukhlevsky; Ida Zs. Kozma; Libero Palladino; Armando Reale; Francesco Flora; Luca Mezi; Gualtiero Giordano

doi:10.1117/12.284824

1 November 1997 Double-pulse excitation of x-ray capillary lasers

Sergei V. Kukhlevsky, Ida Zs. Kozma, Libero Palladino, Armando Reale, Francesco Flora, Luca Mezi, Gualtiero Giordano

Proceedings Volume 3156, Soft X-Ray Lasers and Applications II; (1997) https://doi.org/10.1117/12.284824
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

We propose to enhance the gain of Ne-like ion capillary lasers by the utilization of two discharge pulses. A first pulse working in the pinch regime mode is designed to create the cold-plasma column with the required ionization degree, followed by a second fast high-voltage pulse to do the effective collision excitation. The second pulse, which heats the electrons to a kinetic temperature T_e greater than T_e^cold in times shorter than the ionization time, increases the laser gain. In the two stage pumping scheme, both the amplitude of each of the pulses and the delay between them can be adjusted for independent control of the ionization degree and excitation rate. Numerical estimations performed for the low-Z-ion (Na⁺¹, . . ., Ar⁺⁸) lasers with the double pulse pumping predict enhancement in gain by a factor of approximately 10. In addition, the extension of two-stage electrical pumping to the high-Z-ion collision and recombination laser schemes is discussed. Description of the experimental set-up constructed for such experiments and some related measurement data are also presented.

Citation Download Citation

Sergei V. Kukhlevsky, Ida Zs. Kozma, Libero Palladino, Armando Reale, Francesco Flora, Luca Mezi, and Gualtiero Giordano "Double-pulse excitation of x-ray capillary lasers", Proc. SPIE 3156, Soft X-Ray Lasers and Applications II, (1 November 1997); https://doi.org/10.1117/12.284824

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