We report the first antireflection coatings for fibre pigtailed Ti:LiNbO3 waveguide devices optimised for the 1.55 μm wavelength range. The coatings are single-layer, electron-beam-evaporated yttrium oxide films. A reflection of −35 dB, sufficiently low for operation in conjunction with single-frequency lasers, has been demonstrated.
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Eisenstein et al. (1985) studied this question.
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