Experiment: Measurement Because the maximum sensitivity and linearity of measurement are obtained by adjusting an angle of 45o between the analyzer and the initial plane of polarization the component beam intensities and j, are measured with two highly accurate photodetectors by adjusting the treirsrruitting clirection ofthe wollasion prisrn to be+ 45
Experiment: Measurement Experiment: Measurement Because the maximum sensitivity and Because the maximum sensitivity and linearity of measurement are obtained by linearity of measurement are obtained by adjusting an angle of 45 adjusting an angle of 45 ° between the between the analyzer and the initial plane of polarization, analyzer and the initial plane of polarization, the component beam intensities the component beam intensities J1 and J2 are measured measured with two highly accurate wo highly accurate photodetectors photodetectors by adjusting the transmitting by adjusting the transmitting direction of the Wollaston prism to be direction of the Wollaston prism to be ± 45 °
Experiment: Measurement The temperature-dependent optical rotation angles of cryatalline DL-alanine, D-alanine and L-alanine have been determined from 230K to 290K. The crystals were pre located in the temperature-control vacuum sets, and the beam intensity J, and o was measured by two independent highl accurate photodetectors
Experiment: Measurement Experiment: Measurement The temperature The temperature -dependent optical rotation dependent optical rotation angles of angles of cryatalline cryatalline DL -alanine alanine, D -alanine alanine and L -alanine alanine have been determined from have been determined from 230K to 290K. The crystals were pre . The crystals were pre - located in located in the temperature the temperature -control control vacuum sets vacuum sets, and the beam intensity , and the beam intensity J1 and J2 was measured by two independent highly measured by two independent highly accurate accurate photodetectors photodetectors
Experiment: Measurement ■Ⅲ ustration of optical rotation in chiral material E
Experiment: Measurement Experiment: Measurement Illustration of optical rotation in Illustration of optical rotation in chiral material material
Experiment: Measurement a Resolution of polarization vector through Wollaston prism P P 4545 45^45 El
Experiment: Measurement Experiment: Measurement Resolution of polarization vector through Resolution of polarization vector through Wollaston prism Wollaston prism
Experiment, Calculation Jcos2(45°-)=J(1+sin2)/2 J2=0cos2(45°+g)=J(1-sin2)/2 5,/J+U,=sin 2 9=1/2 arc sin(V-5,/+J Here jo is the intensity in front of the analyzer, J, and J, is the light intensity behind the analyzer, respectively
Experiment: Calculation Experiment: Calculation J1 = J0 cos2 (45 ° -ϕ) = J0 (1 + sin 2 (1 + sin 2 ϕ ) / 2 J2 = J0 cos2 (45 ° +ϕ) = J0 (1 − sin 2 ϕ ) / 2 J1 − J2 / J1 + J2 = sin 2 = sin 2 ϕ ϕ = 1/2 arc sin ( = 1/2 arc sin (J1 − J2 / J1 + J2) Here J0 is the intensity in front of the analyzer, is the intensity in front of the analyzer, J1 and J2 is the light intensity behind the is the light intensity behind the analyzer, respectively. analyzer, respectively