| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Laser Intensity Variation in Amplitude and Phase Induced by Elliptically Polarized Feedback |
| Hai-Sha Niu1, Lian-Qing Zhu1**, Jian-Jun Song2 |
1School of Instrument Science and Optoelectronic Engineering, Beijing Information Science & Technology University, Beijing 100191
2State Key Laboratory of Precision Measurement Technology and Instruments, Department of Precision Instruments, Tsinghua University, Beijing 100084
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| Cite this article: |
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Hai-Sha Niu, Lian-Qing Zhu, Jian-Jun Song 2018 Chin. Phys. Lett. 35 054204 |
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Abstract The laser output characteristics under elliptically polarized optical feedback effect are studied. Elliptically polarized light is generated by wave plate placed in the feedback cavity. By analyzing the amplitude and phase of the laser output in the orthogonal direction, some new phenomena are firstly discovered and explained theoretically. Elliptically polarized feedback light is amplified in the gain medium in the resonator, and the direction perpendicular to the original polarization direction is easiest to oscillate. The laser intensity variation in amplitude and phase are related to the amplified mode and the anisotropy of external cavity. The theoretical analysis and experimental results agree well. Because the output characteristic of the laser has a relationship with the anisotropy of the external cavity, the phenomenon also provides a method for measuring birefringence.
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Received: 24 February 2018
Published: 30 April 2018
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| Fund: Supported by the Program for Changjiang Scholars and Innovative Research Team in University under Grant No IRT160R7. |
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