Cotton-Mouton effect of molecular oxygen: A novel measurement

Year: 1998

Authors: Brandi F., Della Valle F., Micossi P., De Riva A.M., Zavattini G., Perrone F., Rizzo C., Ruoso G.

Autors Affiliation: Laboratori Ist. Naz. di Fis. Nucl., via Romea 4, 35020 Legnaro, Padova, Italy; Dipartimento di Fisica, Piazza Torricelli 1, 56100 Pisa, Italy; Dipartimento di Fisica, Ist. Nazionale di Fisica Nucleare, via Valerio 2, 34127 Trieste, Italy; Dipartimento di Fisica, Ist. Nazionale di Fisica Nucleare, via Paradiso 12, 44100 Ferrara, Italy; Ist. Nazionale di Fisica Nucleare, Sezione di Pisa, via Livornese 582/a, 56010 S. Piero a Grado, Pisa, Italy; INFN Trieste, via Valerio 2, 34127 Trieste, Italy

Abstract: A novel apparatus to measure small magnetic birefringences is described. It is based on a high-finesse Fabry-Perot cavity, to which a Nd:YAG laser is frequency locked, and on a 1.1-T permanent dipole magnet. We report the new measurement of the magnetic anisotropy of the refraction index (Cotton-Mouton effect) for molecular oxygen at lambda = 1064 nm, T = 20 degrees C. Our result, Delta n(O-2) = (-2.29 +/- 0.08)10(-12)(B/1 T)(2)(P/1 atm), is consistent with the existing theoretical predictions and falls in line with the previous experimental results taken at different wavelengths.

Journal/Review: JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS

Volume: 15 (4)      Pages from: 1278  to: 1281

KeyWords: Magnetic birefringence; Cotton-Mouton effect; Molecular oxygen; New measurement
DOI: 10.1364/JOSAB.15.001278

Citations: 21
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