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首页> 外文会议>Conference on Integrated Optics Devices Ⅴ Jan 23-25, 2001, San Jose, USA >Preliminary investigation of an active PLZT lens
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Preliminary investigation of an active PLZT lens

机译：有源PLZT镜头的初步研究

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The design, analysis and preliminary testing of a prototype Adjustable Focus Optical Correction Lens (AFOCL) is described. The AFOCL is an active optical component composed of solid state lead lanthanum-modified zirconate titanate (PLZT) ferroelectric ceramic with patterned indium tin oxide (ITO) transparent surface electrodes that modulate the refractive index of the PLZT to function as an electro-optic lens. The AFOCL was developed to perform optical re-alignment and wavefront correction to enhance the performance of Ultra-Lightweight Structures and Space Observatories (ULSSO). The AFOCL would be an active optical component within a larger optical system. Information from a wavefront sensor would be processed to provide input to the AFOCL to drive the sensed wavefront to the desired shape and location. While offering variable and rapid focussing capability (controlled wavefront manipulation) similar to liquid crystal based spatial light modulators (SLMs), the AFOCL offers some potential advantages because it is a solid-state, stationary, low-mass, rugged, and thin optical element that can produce wavefront quality comparable to the solid refractive lens it replaces. The AFOCL acts as a positive or negative lens by producing a parabolic phase-shift in the PLZT material through the application of a controlled voltage potential across the ITO electrodes. To demonstrate the technology, a 4 mm diameter lens was fabricated to produce 5-waves of optical power operating at 2.051 μm wavelength. Optical metrology was performed on the device to measure focal length, optical quality, and efficiency for a variety of test configurations. Preliminary data was analyzed and compared to idealized performance available from computer-based models of the AFOCL.
机译：描述了原型可调焦光学校正镜（AFOCL）的设计，分析和初步测试。 AFOCL是一种有源光学组件，由固态镧修饰的钛酸锆钛酸铅（PLZT）铁电陶瓷组成，具有图案化的铟锡氧化物（ITO）透明表面电极，可调节PLZT的折射率以用作电光透镜。 AFOCL的开发是为了进行光学重新对准和波前校正，以增强超轻型结构和太空观测站（ULSSO）的性能。 AFOCL将是较大光学系统中的有源光学组件。来自波前传感器的信息将被处理以向AFOCL提供输入，以将感测到的波前驱动到所需的形状和位置。与基于液晶的空间光调制器（SLM）类似，AFOCL具有可变和快速的聚焦能力（受控的波前操纵），但由于它是固态，固定，低质量，坚固且薄的光学元件，因此具有一些潜在的优势。可以产生与其替代的固态折射透镜相当的波前质量。 AFOCL通过在ITO电极上施加受控电压电势在PLZT材料中产生抛物线相移，从而充当正透镜或负透镜。为了演示该技术，制造了直径为4 mm的透镜，以产生在2.051μm波长下工作的5波光焦度。在设备上执行了光学计量，以测量各种测试配置的焦距，光学质量和效率。分析了初步数据，并将其与可从AFOCL的基于计算机的模型获得的理想性能进行了比较。

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