This article is cited in 1 paper

Nonlinear optical phenomena and devices

Efficient formation of a χ⁽²⁾ grating in a germanosilicate fibre containing nitrogen

E. M. Dianov, Yu. P. Yatsenko

Fibre Optics Science Centre at the Institute of General Physics, Russian Academy of Sciences, Moscow

Abstract: A χ⁽²⁾ grating, capable of converting light to the second harmonic with an efficiency of 2%, was formed for the first time in a germanosilicate optical fibre doped with nitrogen and prepared by the method of surface plasma-chemical vapour deposition. A comparison was made of the properties of this grating with those of chi;⁽²⁾ gratings formed in a germanosilicate fibre free of nitrogen. The high efficiency of the conversion processes, observed when a χ⁽²⁾ grating was formed in a nitrogen-doped fibre, indicated the existence of fast-relaxing photocentres associated with nitrogen and accelerating growth of a χ⁽²⁾ grating in the presence of phase fluctuations of laser radiation.

PACS: 42.65.An, 42.65.Ky, 42.81.Wg

Received: 30.10.1997

 English version: Quantum Electronics, 1998, 28:3, 254–256

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