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Polarization control of 1.15 μm vertical-cavity surface-emitting lasers using autocloned photonic crystal polarizer

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6 Author(s)
Dayal, P.B. ; Microsystem Research Center, Precision & Intelligence Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-Ku, Yokohama 226-8503, Japan ; Kitabayashi, N. ; Miyamoto, T. ; Koyama, F.
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The authors propose and demonstrate the polarization control of 1.15 μm, single-mode vertical-cavity surface-emitting lasers (VCSELs) with the hybrid integration of autocloned photonic crystal polarizer (PCP). The authors experimentally found that transverse electric (TE) and transverse magnetic (TM) modes of polarizations of the PCP can be selected for the in-phase and the out-of-phase conditions with respect to the positioning of PCP on the top surface of VCSELs. The lasing spectrum of TE (TM) mode in the in-phase (the out-of-phase) condition shows polarization suppression ratio of 18 (14) dB. This simple method offers stable polarization operation of VCSELs without penalties in laser performances.

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Applied Physics Letters  (Volume:91 ,  Issue: 4 )