Excimer-pumped four level blue-green solid state laser

Details Excimer-pumped four level blue-green solid state laser Excimer-pumped four level blue-green solid state laser

1979-07-11

1981-08-18

Sikes, William L.

Oscillators

Molecular or particle resonant type

331 945P, H01S 314

Patent

active

042849624

ABSTRACT:
An efficient, four-level, blue-green, excimer-pumped laser which is opera at room temperature. The laser element includes a CaWO.sub.4 crystal which has been codoped with trivalent thulium activator ions and divalent ytterbium sensitizer ions. Energy is transferred from the absorbing Yb.sup.2+ ions to the Tm.sup.3+ ions and the laser transition is from the .sup.1 D.sub.2 multiplet to the ground .sup.3 F.sub.4 of the Tm.sup.3+ ion. This transition terminates on an excited state; therefore, the laser action is four-level.

REFERENCES:
patent: 3248667 (1966-04-01), Johnson et al.
patent: 3624549 (1971-11-01), Geusic et al.

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