Hybrid sol-gel planar optics for astronomy.
Hybrid sol-gel planar optics for astronomy.
复制标题
用于天文学的混合溶胶-凝胶平面光学。
作者：
A. Ghasempour;A. Leite;François Reynaud;Paulo Marques;P. J. V. Garcia;D. Alexandre;P. J. Moreira
首次研制出用于天文学的溶胶-凝胶混合平面光学器件。这种材料系统可以从可见光（0.5微米）到天文J波段（1.4微米）的边缘工作。最后给出了一个同轴三光束合束器的设计、制作和性能测试结果。用光谱带宽为50 nm的光源获得了94%以上的条纹对比度。这些结果表明，混合溶胶-凝胶技术可以生产出高质量的器件，为天文应用的新设计和概念的快速原型制作提供了可能性。
Hybrid sol-gel planar optics devices for astronomy are produced for the first time. This material system can operate from the visible (0.5 microm) up to the edge of astronomical J-band (1.4 microm). The design, fabrication and characterization results of a coaxial three beam combiner are given as an example. Fringe contrasts above 94% are obtained with a source with spectral bandwidth of 50 nm. These results demonstrate that hybrid sol-gel technology can produce devices with high quality, opening the possibility of rapid prototyping of new designs and concepts for astronomical applications.