Enhancement of soft X-ray lasing action with thin blade radiator

Details Enhancement of soft X-ray lasing action with thin blade radiator Enhancement of soft X-ray lasing action with thin blade radiator

1985-07-24

1988-09-13

Sikes, William L.

Coherent light generators

Short wavelength laser

372 37, 372 34, 372 76, H01S 330

Patent

active

047714301

ABSTRACT:
An enhancement of approximately 100 of stimulated emission over spontaneous emission of the CVI 182 Angstrom line was obtained in a recombining magnetically confined plasma column. The plasma was formed by focusing a CO.sub.2 laser beam on a carbon disc. A magnetic solenoid produced a strong magnetic field which confined the plasma to the shape of a column. A single thin carbon blade extended parallel to the plasma column and served to make the column axially more uniform and also acted as a heat sink. Axial and transverse measurements of the soft X-ray lasing action were made from locations off-set from the central axis of the plasma column. Multiple carbon blades located at equal intervals around the plasma column were also found to produce acceptable results. According to another embodiment 10 a thin coating of aluminum or magnesium was placed on the carbon disc and blade. The Z of the coating should preferably be at least 5 greater than the Z of the target. Measurements of the soft X-rays generated at 182 Angstroms showed a significant increase in intensity enhancement.

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Suckewer et al., "Population Inversion and Gain Measurement for Soft X-Ray Laser Development in a Magnetically Confined Plasma Column", IEEE, Journal of Quantum Electronics, vol. Q.E-19, No. 12, Dec. 1983, pp. 1855-1859.

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