| dc.contributor.author | Kinyua, Dickson M. | |
| dc.contributor.author | Rurimo, Geoffrey K. | |
| dc.contributor.author | Karim, Patrick M. | |
| dc.contributor.author | Maina, Stephen N. | |
| dc.contributor.author | Ominde, Calvin F. | |
| dc.date.accessioned | 2021-12-15T07:59:55Z | |
| dc.date.available | 2021-12-15T07:59:55Z | |
| dc.date.issued | 2013-10 | |
| dc.identifier.citation | Kinyua, D. M., Rurimo, G. K., Karimi, P. M., Maina, S. N., & Ominde, C. F. (2013). Interferometry analysis of cellophane birefringence. Optics and Photonics Journal, 3(6), 337-341. | en_US |
| dc.identifier.other | http://dx.doi.org/10.4236/opj.2013.36052 | |
| dc.identifier.uri | http://repository.must.ac.ke/handle/123456789/582 | |
| dc.description.abstract | This paper reports on a simple approach of determining the ability of a transparent material, such as cellophane to rotate
the direction of polarization of a light beam. In order to determine the birefringence of such a material, a Mach-Zehnder
interferometer is used to generate interference patterns when the cellophane sheet is mounted on one arm such as to
intercept a portion of the laser beam. The recorded interferograms show a phase shift which is calculated to be 0.98π
radians. By rotating the cellophane sheet on the object beam, the fringe separation is measured for different angles and
the values used to calculate the ordinary and extraordinary refractive indices as 1.4721 ± 0.0002 and 1.4680 ± 0.0002
respectively at 632.8 nm wavelength. A surface error of approximately λ/16 (peak to valley) is measured from the recorded interferograms. Because of its sufficient birefringence and small thickness of 24 µm, cellophane can be used to
fabricate special polarization pupil masks by cutting and aligning different cellophane structures appropriately. | en_US |
| dc.language.iso | en | en_US |
| dc.publisher | Optics and Photonics Journal | en_US |
| dc.subject | Cellophane Sheet | en_US |
| dc.subject | Birefrigence | en_US |
| dc.subject | Interferrogram | en_US |
| dc.subject | Polarization | en_US |
| dc.title | Interferometry Analysis of Cellophane Birefringence | en_US |
| dc.type | Article | en_US |
