Abstract
We present the effects of optical feedback from an anisotropic external cavity on the characteristics of the output intensities in a single mode Nd:YAG laser. Due to the birefringence effect, the external cavity modulates laser intensities in the two orthogonal directions with a phase difference, which is twice as large as that of the birefringence element in the external cavity. Experimental results are presented, as well as a theoretical analysis. The potential applications of this phenomenon are also discussed.
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