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1 Jun 1975

Volume 26, Issue 11, pp. 593-656

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Optical waveguides in LiNbO3 by ion exchange technique

Manhar L. Shah

Appl. Phys. Lett. 26, 652 (1975); http://dx.doi.org/10.1063/1.88014 (2 pages) | Cited 27 times

Online Publication Date: 2 September 2008

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Optical waveguides produced in LiNbO3 by immersing the x‐cut plates into molten AgNO3 are reported. An increase in the extraordinary refractive index of LiNbO3 at the surface of the plate due to silver exchange is estimated to be 0.12. In such a waveguide, optical losses of 6 dB/cm were measured for the highest‐order mode; losses were higher for the lower‐order modes.
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42.79.Gn Optical waveguides and couplers
82.39.Wj Ion exchange, dialysis, osmosis, electro-osmosis, membrane processes

Tunable dye laser resonance excitation of the LaAlO3:Cr3+ vibronic spectrum

S. Aoki and I. D. Abella

Appl. Phys. Lett. 26, 653 (1975); http://dx.doi.org/10.1063/1.88015 (3 pages) | Cited 3 times

Online Publication Date: 2 September 2008

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A fluorescence spectrum of the vibronic sideband of Cr3+ in LaAlO3 has been obtained by means of pulsed tunable dye laser excitation on resonance with the zero‐phonon line. This method of excitation offers improved resolution, while attenuating competing spectral features arising from impurity ion pair interactions.
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78.55.-m Photoluminescence, properties and materials
63.20.Pw Localized modes
42.62.-b Laser applications

Thin films of mischmetal cobalt alloys

H. Jain and E. C. Subbarao

Appl. Phys. Lett. 26, 655 (1975); http://dx.doi.org/10.1063/1.88022 (2 pages)

Online Publication Date: 2 September 2008

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Films of MMCo5 of a few hundred angstroms thickness, where MM is mischmetal (combination of rare earths), were prepared by vacuum deposition. These films were amorphous and could be crystallized as a RCo5 phase by heat treatment.
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68.55.-a Thin film structure and morphology
81.20.-n Methods of materials synthesis and materials processing
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