23 August 2017 Nanosecond KTN varifocal lens without electric field induced phase transition
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This paper presents a nanosecond speed KTN varifocal lens. The tuning principle of varifocal lens is based on the high-speed refractive index modulation from the nanosecond speed tunable electric field. A response time on the order of nanoseconds was experimentally demonstrated, which is the fastest varifocal lens reported so far. The results confirmed that the tuning speed of the KTN varifocal lens could be significantly increased by avoiding the electric field induced phase transition. Such a nanosecond speed varifocal lens can be greatly beneficial for a variety of applications that demand high speed axial scanning, such as high-resolution 3D imaging and high-speed 3D printing.
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Wenbin Zhu, Wenbin Zhu, Ju-Hung Chao, Ju-Hung Chao, Chang-Jiang Chen, Chang-Jiang Chen, Adrian Campbell, Adrian Campbell, Michael Henry, Michael Henry, Stuart (Shizhuo) Yin, Stuart (Shizhuo) Yin, Robert C. Hoffman, Robert C. Hoffman, } "Nanosecond KTN varifocal lens without electric field induced phase transition", Proc. SPIE 10382, Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XI, 103820R (23 August 2017); doi: 10.1117/12.2276511; https://doi.org/10.1117/12.2276511

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