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Enhancement of a liquid-crystal modulator using an external-cavity VCSEL

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6 Author(s)
C. I. Wilkinson ; Dept. of Electron. & Electr. Eng., Sheffield Univ., UK ; J. Woodhead ; J. E. F. Frost ; J. S. Roberts
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We describe a vertical-cavity surface-emitting laser (VCSEL) and liquid-crystal modulator (LCM) system. The LCM controls external optical feedback into the VCSEL to produce a single switching element that has an enhanced contrast ratio compared to an LCM alone.

Published in:

IEEE Photonics Technology Letters  (Volume:11 ,  Issue: 8 )