Optical

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Optical Activity of the Chiral Solutions (1.5)

Students Manual This highly interdisciplinary experiment will expose the students to the wave nature of light and the concept of polarization. The experimenters will use a tabletop laser as a light source and will use polarizers to control the generation and transmission of polarized light. Furthermore, students will determine the optical activity of a chiral molecule. The experiment will also engage the students in an exercise whereby they will be asked to describe what is meant by “optimum” measurements.
Matlab Code Malus
Sample Results Verification of Malus's Principle
Further Readings and References

"Using guided inquiry to study optical activity and optical rotary dispersion in a cross disciplinary chemistry lab", M.A. Vaksman and J.W Lane , Journal of Chemical Education78, 1507 (2001).
"Chirality Made Simple: A 1 and 2-D introduction to Stereo Chemistry", R.A. Gawley, Journal of Chemical Education 82, 1009 (2005).

"Synthesis and physical properties of liquid crystals: an interdisciplinary experiment", G.R. Van Hecke et al, Journal of Chemical Education 82, 1349 (2005).
Supporting Literature
for the Hardware
Laser: He-Ne 632 nm, 2 mW, continuous wave, random polrized light(Laser specifications)

Commonly used circuits with photodiodes and phototransistors
Si Photodetector: 400-1100 nm, low power(818 Series / Newport photodecteor specifications)

Pictorial Procedure (1.5)

1. Provided apparatus
1. Provided apparatus
2. Mounting a polarizer
2. Mounting a polarizer
3. Rotating the optical axis clockwise
3. Rotating the optical axis clockwise
4. Adjusting height and orientation of a polarizer
4. Adjusting height and orientation of a polarizer
5. Opening the laserhead shutter
5. Opening the laserhead shutter
6. Input mode at GROUND
6. Input mode at GROUND
7. Input mode at DC
7. Input mode at DC
8. Polarizer A near the laser output
8. Polarizer A near the laser output
9. Polarizer B infront of the detector
9. Polarizer B infront of the detector
10. Mounting a sucrose cell
10. Mounting a sucrose cell
11. Setup for optical activity masurement
11. Setup for optical activity masurement
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