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Polarization control of vertical-cavity surface emitting lasers using a birefringent metal/dielectric polarizer loaded on top distributed Bragg reflector

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6 Author(s)
Mukaihara, T. ; Precision & Intelligence Lab., Tokyo Inst. of Technol., Yokohama, Japan ; Ohnoki, N. ; Hayashi, Y. ; Hatori, N.
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A novel polarization control method using a birefringent metal/dielectric (semiconductor) polarizer has been proposed for the purpose of controlling the polarization state of vertical-cavity surface-emitting lasers (VCSEL's). The proposed structure provides a phase difference for two orthogonal polarization states, resulting in reasonably large reflectivity difference in two polarizations. We have experimentally demonstrated the polarization control InGaAs-GaAs VCSEL's while maintaining a low threshold current density of 660 A/cm2. A predominant polarization state along the designed orientation is obtained up to two times the threshold

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Selected Topics in Quantum Electronics, IEEE Journal of  (Volume:1 ,  Issue: 2 )