| Autor: |
L. M. Filimonova, G. V. Arzamastseva, V. B. Kravchenko |
| Rok vydání: |
1989 |
| Předmět: |
|
| Zdroj: |
Soviet Journal of Quantum Electronics. 19:233-235 |
| ISSN: |
0049-1748 |
| DOI: |
10.1070/qe1989v019n02abeh007813 |
| Popis: |
The refractive index n of quasihomogeneous iron garnet films with the composition (YGdYb)3 – xBixFe5 – yAlyO12 increased considerably as a result of reduction in the growth temperature Tg. This was attributed mainly by an increase in x and a reduction in y. The dependences n(Tg) were used to select the conditions for growth of inhomogeneous (across the thickness) films and to predict the refractive index profile n(z), where z was measured from the free surface along the normal to the film. The spectra of optical modes were analyzed in the WKB approximation and this yielded the n(z) profiles for films with a refractive index n decreasing monotonically from the free surface and for films with the symmetric profile n(z) (buried waveguides). The n(z) profiles were compared with the distributions of the compensation temperature Tc(z), and of x(z) and y(z) across the thickness. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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