Polarization control of vertical-cavity surface emitting lasers using a birefringent metal/dielectric polarizer loaded on top distributed Bragg reflector
1995; IEEE Photonics Society; Volume: 1; Issue: 2 Linguagem: Inglês
10.1109/2944.401256
ISSN1558-4542
AutoresT. Mukaihara, N. Ohnoki, Yusuke Hayashi, Nobuaki Hatori, Fumio Koyama, Kenichi Iga,
Tópico(s)Optical Network Technologies
ResumoA 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/cm/sup 2/. A predominant polarization state along the designed orientation is obtained up to two times the threshold. >
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