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The output characteristics of two orthogonally polarized frequencies in a Zeeman-birefringent dual frequency laser are studied under three different optical feedback cases: (a) only the perpendicular light is fed back; (b) only the parallel light is fed back; (c) both frequencies are fed back. Laser intensity and the free running frequency’s intensity are also studied at the same time. Sign inversion...
The output characteristics of two orthogonally polarized modes are studied in a birefringence dual frequency He–Ne laser with optical feedback. The frequency difference of the dual frequency laser is 450 MHz. Modes competition is fair when the two modes’ maximal intensities are equal with optical feedback. But it is quite unfair modes competition when the two modes’ maximal intensities are quite different...
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