We summarize the performances measured at room temperature and in cryogenic conditions of a set of NIR VolumePhase Holographic Gratings (VPHGs) which can then be used in astronomical instrumentations. VPHGs are noveloptical components which can replace standard transmission gratings. Instead of a surface modulation a diffraction indexmodulation printed in a volume of material generates the diffraction according to the required specifications. Results ontransmission and wavefront deformation are presented and compared in the two temperature regimes. These results wereachieved along the run of the Joint Research Action 6 of OPTICON FP6 programme whose participating institutions areOsservatorio Astronomico di Brera (INAF), Instituto de Astrofisica de Canarias, Centre Spatial de Liege, Politecnico diMilano and European Southern Observatory.
展开▼
机译：我们总结了在室温下测量的性能以及一组NIR Volumephase全息光栅（VPHG）的低温条件，然后可以用于天文仪器。 VPHGS是可以取代标准传输光栅的新型开发部件。代替表面调制，在一定体积的材料中印刷的衍射折射度调节根据所需的规格产生衍射。结果在两个温度制度中呈现并比较了ontransmission和波前变形。这些结果沿着Opticon FP6计划的联合研究行动6，其参与机构Asosservatorio天文学迪尔玛拉（InsaF），Instituto De Astrofisica de Canarias，Center Spatial de Leege，Politecnico Dimilano和欧洲南部天文台。
展开▼
