Optical absorption coefficient of magneto-optic garnet films
This paper analyzes various factors contributing to optical attenuation in magneto-optic garnet films and derives expressions for the optical absorption and scattering coefficients ..cap alpha.. and ..gamma... The values of ..cap alpha.. and ..gamma.. for (BiTm)/sub 3/(FeGa)/sub 5/O/sub 12/ films were measured in a magneto-optic modulation device by comparing the magneto-optic rotations. Compared with other methods, this technique has two advantages: (1) absorption in the substrate is eliminated, and the measured values ..cap alpha.. are not affected by reflection at the film/substrate interface; (2) the optical scattering coefficient ..gamma.. can be separated from the optical absorption ..cap alpha.., so that the measured value ..cap alpha.. closely approximates the true optical absorption coefficient for magneto-optic garnet film materials.
- Research Organization:
- Department of Applied Physics, Shanghai Jiaotong University
- OSTI ID:
- 5581759
- Journal Information:
- Chin. Phys. Lasers; (United States), Vol. 13:2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
BISMUTH OXIDES
OPTICAL PROPERTIES
GALLIUM OXIDES
SOLID STATE LASERS
LASER MATERIALS
TANTALUM OXIDES
ABSORPTIVITY
FERRITE GARNETS
FERRITES
FILMS
MAGNETO-OPTICAL EFFECTS
MODULATION
OPACITY
BISMUTH COMPOUNDS
CHALCOGENIDES
FERRIMAGNETIC MATERIALS
GALLIUM COMPOUNDS
IRON COMPOUNDS
LASERS
MAGNETIC MATERIALS
MATERIALS
MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
REFRACTORY METAL COMPOUNDS
SILICATE MINERALS
TANTALUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
420300* - Engineering- Lasers- (-1989)
360204 - Ceramics
Cermets
& Refractories- Physical Properties