Coherent light generators – Particular active media – Gas
Patent
1984-05-08
1986-12-02
Scott, Jr., Leon
Coherent light generators
Particular active media
Gas
372 74, 372 39, H01S 322
Patent
active
046270663
ABSTRACT:
A preferred embodiment of an excimer laser has a heat pipe oven adapted to raise sodium therein to a temperature of about 800 Kelvin and thereby vaporize the sodium at a pressure of no more than about 0.1 atmosphere, the heat pipe oven having substantially transparent ends. A ring cavity made up of a plurality of mirrors and an adjustable birefringent filter circulates violet light of a desired wavelength through the transparent ends of the heat pipe oven, and a pump laser introduces radiation into the heat pipe oven at an energy high enough to ionize sodium therein to form Na.sub.3.sup.+ ions and free electrons. The recombination of Na.sub.3.sup.+ ions and free electrons causes the ions to dissociate into free sodium atoms and excited Na.sub.2 molecules which, when stimulated by violet light of the desired wavelength, further dissociate into two free sodium atoms and emit additional violet light of the desired wavelength.
REFERENCES:
patent: 4087765 (1978-05-01), Edelstein et al.
Bahns et al; "New Alkali Metal Dimer Optically Pumped Lasers"; Proc. of Int. Conf. on Lasers '82.
Rajaei-Rizi et al; "Optically Pumped Ring Laser Oscillation in .sup.6 Li.sub.2 Molecule"; Appl. Phys. Lett 40(10), 15 May 1982.
Bahns et al; Optically Pumped Ring Laser Oscillation to Vibrational Levels Near Dissociation and to Contin. of Na.sub.2 "; Appl. Phys Lett 42(4), 15 Feb. 83.
Rajaei-Rizi et al; "New Optically Pumped Alkali Metal Dimer Lasers"; Proc. of Int. Conf. on Lasers '81.
Koch Mark E.
Stwalley William C.
Jr. Leon Scott
University of Iowa Research Foundation
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