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arXiv 1406.2695astro-ph.IMastro-ph.EP
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用于背景限制成像和Photometry的近红外InGaAs探测器

Near-Infrared InGaAs Detectors for Background-limited Imaging and Photometry

Peter W. Sullivan, Bryce Croll, Robert A. Simcoe

摘要:

InGaAs探测器最初是为夜视设备设计的,现在已经开始在地面宽带成像中实现背景限制性能。这些探测器的较低成本可以使多波段仪器,小型望远镜阵列和大型焦平面成为可能,而高性能HgCdTe探测器则不经济。我们开发了一款摄像机,用于操作FLIR AP 1121传感器,采用深度热电冷却和斜坡上采样来最大限度地降低噪声。我们测量了163 $~e$ - s $^{-1}$ pix $^{-1}$的暗电流,87 $~e$ - up-the-ramp的读取噪声,以及80 k $~e$ -的阱深度。实验室光度测试达到了230 ppm hr $^{-1/2}$的稳定性,这是探测系外行星凌日所需的。InGaAs探测器也适用于近红外时域天文学的其他分支,从褐矮星天气到引力波跟踪。

英文摘要:

Originally designed for night-vision equipment, InGaAs detectors are beginning to achieve background-limited performance in broadband imaging from the ground. The lower cost of these detectors can enable multi-band instruments, arrays of small telescopes, and large focal planes that would be uneconomical with high-performance HgCdTe detectors. We developed a camera to operate the FLIR AP1121 sensor using deep thermoelectric cooling and up-the-ramp sampling to minimize noise. We measured a dark current of 163$~e$- s$^{-1}$ pix$^{-1}$, a read noise of 87$~e$- up-the-ramp, and a well depth of 80k$~e$-. Laboratory photometric testing achieved a stability of 230 ppm hr$^{-1/2}$, which would be required for detecting exoplanet transits. InGaAs detectors are also applicable to other branches of near-infrared time-domain astronomy, ranging from brown dwarf weather to gravitational wave follow-up.

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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