Temperature and Intensity Dependent Faraday Rotation in Hg_{1-x}Mn_{x}Te at CO_{2} Laser Wavelengths

• Authors: L. Kowałczyk , R. Gałązka
• Languages of publication: EN

Abstracts

EN

Faraday rotation in Hg_{1-x}Mn_{x}Te (x = 0.11) has been investigated experimentally over the temperature range from T = 8 K to 250 K using a Q-switched CO_{2} laser. Due to the exchange interaction between mobile carriers and localized Mn ions, dramatic enhancement of Verdet coefficient at low temperatures has been observed. The values of Verdet coefficient V = 5585 rad T^{-1} m^{-1} at 8 K and V = 1745 rad T^{-1} m^{-1} at 80 K have been obtained for Hg_{0.89}Mn_{0.11}Te at 10.6 μm. The dependence of Faraday rotation on intensity of laser radiation has been observed. Intensity dependent Faraday rotation shows saturation for high laser power. Intensity induced rotation is qualitatively attributed to the dispersion associated with saturable absorption of laser radiation. The results obtained in this work indicate that Hg_{1-x}Mn_{x}Te is a suitable material for Faraday rotator at CO_{2} laser wavelengths for high power laser beam.

Keywords

EN

78.20.Ls; 75.30.El

Discipline

• 78.20.Ls: Magneto-optical effects(for magneto-optical devices, see 85.70.Sq)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 80
• Issue: 3
• Pages: 429-431

Dates

published

1991-09

Contributors

author

L. Kowałczyk

• Institute of Physics' Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

author

R. Gałązka

• Institute of Physics' Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland

Identifiers

DOI

10.12693/APhysPolA.80.429