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Second harmonic conversion efficiencies of 3 × 10−4 in tantalum doped silica fibres prepared by the seeding technique are reported. A series of experiments were conducted to characterise the frequency doubling in this fibre and to compare the results to the behaviour observed in germanosilicate and rare earth doped aluminosilicate fibres.
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Driscoll et al. (1991) studied this question.
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