STUDI AWAL SIFAT OPTIS TAKLINIER LARUTAN GARAM DALAM MEDAN MAGNET LUAR
Keywords:
Optis Tak Linier, Non-Linear Optics, Sudut Polarisasi, Polarization, Indek Bias, Refractive Index, Kedalaman Frinji, Resolution of FringesAbstract
STUDI AWAL SIFAT OPTIS TAK LINIER LARUTAN GARAM DALAM MEDAN MAGNET LUAR. Telah dilakukan kajian pada sifat optis tak linier dari larutan garam dalam medan magnet luar (B). Besar medan magnet maksimum adalah sekitar 0,049 T yang dihasilkan dari kumparan kawat sebanyak 6625 lilitan dan dialiri arus listrik bolak-balik sebesar maksimum 5 A. Interaksi radiasi sinar Laser He-Ne 633 nm, 5 mW, dengan sampel dalam medan magnet digunakan untuk mengukur perubahan sudut polarisasi cahaya laser. Sedangkan perubahan indek bias terhadap B diperoleh dengan metode interferometer Michelson. Untuk variasi konsentrasi larutan NaCl, diperoleh bahwa perubahan sudut polarisasi bertambah secara linier terhadap B. Sedangkan indek bias cenderung berkurang secara linier dengan kenaikan B.
ABSTRACT
THE STUDIES OF NON LINEAR OPTIC OF SODIUM IN EXTERNAL MAGNETIC FIELD. The characteristics of nonlinear optics of NaCl solution in a external magnetic field (B) have been studied. Amaximum external magnetic field of 0.049 T is produced by 6625 turns of coil with maximum current 5 A. The interaction of 5 mW, 633 nm, He-Ne Laser with the sample in B leads to change of polarization angle, β of the electric field of light. The change of refractive index of the materials is measured using Michelson interferometer. For various NaCl-solution concentrations, we have proved that the change of polarization angle varies linearly to B. It has also been concluded that the refractive index of NaCl-solution are decreased linearly if B is increased.
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