在声光可调滤波器中使用复用布拉格光栅堆叠光谱线。

IF 3.2 2区 物理与天体物理 Q2 OPTICS Optics express Pub Date : 2024-07-29 DOI:10.1364/OE.527642
F J Fagginger Auer, C U Keller
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引用次数: 0

摘要

体布拉格光栅是在各种环境下进行光谱操作的有用工具。在之前的一篇论文[《天文学与天体物理学》待发表,(2024年)]中,我们模拟了一种天文仪器,该仪器通过使用复用布拉格光栅光学叠加光谱线来创建匹配滤波器,从而探测系外行星上的分子。在这里,我们证实可以利用声光可调谐滤波器(AOTF)自由修改和复用布拉格光栅,并且可以利用市售的AOTF在实验室设置中叠加光谱特征。我们发现,只要带通不重叠,我们就能在不改变其他多路复用光栅的情况下多路复用一个额外的光栅或修改现有的光栅。我们还可以成功地叠加发射和吸收谱线,在光学叠加谱线和计算单独谱线图像的总和时产生可比较的结果。
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Stacking spectral lines with multiplexed Bragg gratings in an acousto-optical tunable filter.

Volume Bragg gratings are a useful tool for spectral manipulation in a variety of settings. In a previous paper [Astron. & Astrophys. to be published, (2024)] we simulated an astronomical instrument that detects molecules on exoplanets by optically creating matched filters using multiplexed Bragg gratings, which optically stack spectral lines. Here, we confirm that we can freely modify and multiplex Bragg gratings, with an acousto-optical tunable filter (AOTF) and that we can stack spectral features in a lab setup using a commercially available AOTF. We find that we are able to multiplex an additional grating or modify an existing grating without altering other multiplexed gratings, so long as the bandpasses do not overlap. We can also successfully stack emission and absorption lines, producing comparable results when optically overlaying spectral lines and computationally summing images of separate lines.

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来源期刊
Optics express
Optics express 物理-光学
CiteScore
6.60
自引率
15.80%
发文量
5182
审稿时长
2.1 months
期刊介绍: Optics Express is the all-electronic, open access journal for optics providing rapid publication for peer-reviewed articles that emphasize scientific and technology innovations in all aspects of optics and photonics.
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