Oscillators – Molecular or particle resonant type
Patent
1979-05-30
1981-03-10
Sikes, William L.
Oscillators
Molecular or particle resonant type
H01S 316
Patent
active
042557194
ABSTRACT:
Intense optical pumping of the 1S.sigma..sub.g .fwdarw.2P.sigma..sub.u transition of the F.sub.2.sup.+ color center as required for laser action produces a slow orientational bleaching of the F.sub.2.sup.+ color centers that is eventually debilitating to the F.sub.2.sup.+ color center laser action. This bleaching is prevented by periodically or continuously subjecting the color centers to a two-step pumping with polarized radiation such that the centers are all returned to the optimal orientation for absorbing pumping radiation for laser action.
REFERENCES:
patent: 3970960 (1976-07-01), Mollenauer
"Reorientation of M Centers In KCl" Schneider; Phys. Rev. Lett. vol. 24, No. 23 pp. 1296-1298, Jun. 1970.
"The F.sub.2.sup.+ Center in KCl Crystals Part II: Optical Properties and Analogy with the H.sub.2.sup.+ Molecule" Aegerter et al.; Phys. Stat. Sol. (1971) (b), vol. 23, pp. 245-261.
"Broadly Tunable Lasers Using Color Centers"; Mollenauer et al.; Jrnl. App. Physics vol. 46, No. 7, (Jul. 1975) pp. 3109-3118.
"Broadly Tunable CW Lasers Using F.sub.2.sup.+ Centers for 1.26-1.48 and 0.82-1.07 .mu.m Bands"; Mollenauer et al.; Optics Lett. Vol. 3, No. 2, Aug. l978, pp. 48-50.
Bloom David M.
Mollenauer Linn F.
Bell Telephone Laboratories Incorporated
Einschlag Michael B.
Jr. Leon Scott
Sikes William L.
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