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arXiv 0910.4804astro-ph.IM
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用于天文学的集成光子光谱仪的表征和天空演示

Characterization and on-sky demonstration of an integrated photonic spectrograph for astronomy

N. Cvetojevic, J. S. Lawrence, S. C. Ellis, J. Bland-Hawthorn, R. Haynes, A. Horton

摘要:

我们目前的结果,从第一个原型天文集成光子光谱仪(IPS)的天空演示使用英澳望远镜近红外成像光谱仪(IRIS 2)在锡丁泉天文台观察大气分子OH发射线。我们已经成功地探测到了27条以上的谱线,并证明了IPS设备在天文学上的实用性。此外,我们提出了一个实验室表征的设备,这是一个商业阵列波导光栅复用器的修改版本。我们测量的光谱分辨率半峰全宽为0.75+/-0.05nm(在1500 nm处给出R = 2100+/-150)。我们发现自由光谱范围为57.4+/-0.6nm,峰值总效率为~ 65%。最后,我们简要地讨论了未来的步骤,实现天文仪器的基础上,这一技术概念。

英文摘要:

We present results from the first on-sky demonstration of a prototype astronomical integrated photonic spectrograph (IPS) using the Anglo-Australian Telescope near-infrared imaging spectrometer (IRIS2) at Siding Spring Observatory to observe atmospheric molecular OH emission lines. We have succeeded in detecting upwards of 27 lines, and demonstrated the practicality of the IPS device for astronomy. Furthermore, we present a laboratory characterization of the device, which is a modified version of a commercial arrayed-waveguide grating multiplexer. We measure the spectral resolution full-width-half-maximum to be 0.75+/-0.05nm (giving R = 2100+/-150 at 1500nm). We find the free spectral range to be 57.4+/-0.6nm and the peak total efficiency to be ~65%. Finally, we briefly discuss the future steps required to realize an astronomical instrument based on this technology concept.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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