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Hysteresis Loop Effect on Intensity for Horizontal and Vertical Polarization by Optical Feedback | ||
| Journal of University of Anbar for Pure Science | ||
| Article 22, Volume 14, Issue 2, 2020, Pages 55-63 PDF (1.94 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2022.172388 | ||
| Authors | ||
| Ehsan Ali Abed* 1; Jassim Mohammed Najim2; Suaded Salman Ahmed3 | ||
| 1Department of Physics, College of Science, University of Anbar, Iraq | ||
| 2Department of Basic Sciences, College of Dentistry, University of Anbar, Iraq | ||
| 3Department of Physics, College of Science, University of Baghdad, Iraq | ||
| Abstract | ||
| The effect of optical feedback on hysteresis loop (HL) is investigated. Hysteresis loop occurs between two eigenstates of the He-Ne laser (x , y) and it changes by optical feedback at angles from 0° to 180°. Hysteresis loop size decreases and increases with the rotation angle (θ) of the polarization. Hysteresis loop effects on vertical (⊥) and horizontal (//) polarization and the intensity for two eigenstates. When HL size increases, then the intensity (I⊥ or I//) decreases vice versa clear. Best results at 70-110 angles from the external cavity (optical feedback cavity), whereas the intensity very high and HL disappear. | ||
| Keywords | ||
| Hysteresis loop; Optical feedback; Polarization; He-Ne laser | ||
| References | ||
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