BIGRE: a new double microlens array for the integral field spectrograph of SPHERE
BIGRE: a new double microlens array for the integral field spectrograph of SPHERE
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BIGRE：用于SPHERE积分场光谱仪的新型双微透镜阵列
DOI：
10.1117/12.789354
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发表时间：
2008
影响因子：
3.1
通讯作者：
P. Puget
中科院分区：
文献类型：
--
作者：
E. Giro;R. Claudi;J. Antichi;Pietro Bruno;E. Cascone;V. D. Caprio;S. Desidera;R. Gratton;D. Mesa;S. Scuderi;M. Turatto;J. Beuzit;K. Dohlen;P. Puget
IFS是SPHERE的积分场光谱仪，是VLT的第二代仪器，致力于寻找系外行星。为了达到IFS所要求的性能，设计了一种新型的焦平面采样装置，并进行了原型制作和实验室测试。这个名为BIGRE的装置由两个不同焦距和厚度的微透镜阵列组成的系统组成，这些微透镜阵列的焦距和厚度等于它们的总和，并精确地排列在一起。此外，在第一阵列上沉积了掩模以产生每个透镜的场停止。实验室测试证实，原型的规格和性能符合光学微透镜制造的最先进水平。为了对该装置进行表征，在实验室建立了IFS模拟器，并在实际工作条件下对BIGRE性能进行了测试，结果表明双阵列设计满足IFS要求。
IFS is the Integral Field Spectrograph for SPHERE, a 2nd generation instrument for VLT devoted to the search of exoplanets. To achieve the performances required for the IFS a new device sampling the focal plane has been designed, prototyped and tested in laboratory. This device named BIGRE consists of a system made of two microlens arrays with different focal lengths and thickness equal to the sum of them and precisely aligned each other. Moreover a mask has been deposited on the first array to produce a field stop for each lenslet. Laboratory tests confirmed that specifications and properties of the prototype are met by state of the art on optics microlens manufacturing. To characterize the device, a simulator of IFS has been built in laboratory and the BIGRE properties have been tested in real working conditions, showing that the design of the double array fulfills IFS requirements.