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Temperature characteristics of VCSEL with liquid crystal overlay

Wang Qiang Guan Bao-Lu Liu Ke Shi Guo-Zhu Liu Xin Cui Bi-Feng Han Jun Li Jian-Jun Xu Chen

Temperature characteristics of VCSEL with liquid crystal overlay

Wang Qiang, Guan Bao-Lu, Liu Ke, Shi Guo-Zhu, Liu Xin, Cui Bi-Feng, Han Jun, Li Jian-Jun, Xu Chen
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Publishing process
  • Received Date:  22 July 2013
  • Accepted Date:  31 August 2013
  • Published Online:  05 December 2013

Temperature characteristics of VCSEL with liquid crystal overlay

  • 1. Laboratory of Opto-electronics Technology, College of Electronic Information and Control Engineering, Beijing University of technology, Beijing 100124, China
Fund Project:  Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 60908012).

Abstract: The 850-nm vertical-cavity surface-emitting laser (VCSEL) with liquid crystal overlay is presented utilizing the birefringence of nematic liquid crystal. Threshold current, peak of optical power and I-P characteristics at different temperatures were studied. At 293 K, the current between the first polarization hop and the second one has an increase of 2.2 mA after overlaying the liquid crystal. At 313 K and 3 mA, the optical power difference between the two orthogonally polarized lights increases from 133.6 to 248.8 μW. The experimental results show that the nematic liquid crystal enlarges the stable range and the discrete of optical power of orthogonally polarized state. Our research could provide insight into the design and fabrication of VCSEL with stable polarization at high temperatures.

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