A novel orthogonal polarized dual-frequency laser using a Y-shaped cavity |
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Authors: | Guangzong Xiao Xingwu Long Bin Zhang |
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Institution: | Department of Optoelectronic Engineering, College of Optoelectronic Science and Engineering, National University of Defense Technology, Changsha 410073, China |
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Abstract: | In this paper, we propose and demonstrate a novel dual-frequency He-Ne laser based on a Y-shaped cavity. The laser uses a polarization beam splitter to produce two orthogonal polarized beams that oscillate simultaneously in different sub-cavities. The different optical lengths of the cavities produce two longitudinal mode series with different mode spacing. In our experiments, a frequency difference between two orthogonal polarized lights ranging from 26 to 665 MHz was observed by changing the voltage applied to the piezoelectric transducer attached to the mirror of P polarized sub-cavity. The lock-in frequency difference is about 26 MHz. The competing processes were also investigated. |
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Keywords: | Dual-frequency laser Y-shaped cavity Lock-in frequency difference |
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