Abstract
Coherent radiation at 89.6 nm has been obtained through third-harmonic conversion of the 268.8 nm pulses in mercury vapors. Tunability of the fourth-harmonic frequency of the Nd: glass laser radiation to the 6s 1 S 0–8s 1 S 0 double quantum resonance of Hg atoms has been used for the resonant enhancement of the twelfth-harmonic output. Possibility to phase match the generated radiation and driving polarisation in pure vapors without employing of bufer gas has been demonstrated.
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Slabko, V.V., Popov, A.K. & Lukinykh, V.F. Generation of coherent radiation at 89.6 nm through two-photon resonant phase-matched tripling of fourth-harmonic Nd: Glass laser radiation in Hg vapors. Appl. Phys. 15, 239–241 (1978). https://doi.org/10.1007/BF00928216
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DOI: https://doi.org/10.1007/BF00928216