Coherent light generators – Short wavelength laser
Patent
1994-03-14
1996-01-23
Scott, Jr., Leon
Coherent light generators
Short wavelength laser
372 39, 372 69, H01S 330
Patent
active
054870780
ABSTRACT:
Apparatus and method for generating prompt X-radiation from gas clusters. The present invention includes the excitation of inner-shell electrons in the atoms comprising gas clusters using intense ultraviolet laser radiation, thereby producing intense, prompt X-ray emission from the ensemble. Clusters enable atomic excitation rates to achieve the high values characteristic of condensed matter while simultaneously eliminating, through local rapid expansion to low particle density, undesirable collisional interactions that would establish equilibrium conditions in the excited material, and effectively destroy the inner-shell specificity of the excitation. By choosing the atomic species in the cluster, the laser intensity and wavelength, and the cluster size, one can determine the wavelength of X-radiation emitted from the clusters. Moreover, by selecting the energy levels involved in the excitation process, one can produce a population inversion having significant gain and suitable for lasing.
REFERENCES:
patent: 4592064 (1986-05-01), Silfvast
patent: 4875213 (1989-10-01), Lo
patent: 4887273 (1989-12-01), Komatsubara et al.
Boyer Keith
Rhodes Charles K.
Board of Trustees of the University of Illinois
Freund Samuel M.
Jr. Leon Scott
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