2026-06-03 合肥物質科学研究院（HFIPS）
Schematic diagram of the water vapor profile measurement experiment using a VIPA spectrometer (Image by TANG Tu)
＜関連情報＞
- https://english.hf.cas.cn/nr/rn/202606/t20260603_1161061.html
- https://opg.optica.org/ol/abstract.cfm?uri=ol-51-10-2816
仮想イメージング位相アレイに基づく広帯域高解像度分光放射計 Broadband high-resolution spectroradiometer based on a virtually imaged phased array
Guojun Qiu, Weixiong Zhao, Tu Tan, Jun Li, Junjie Wang, Weidong Chen, and Weijun Zhang
Optics Letters Published: May 7, 2026
DOI:https://doi.org/10.1364/OL.599687
Abstract
A novel broadband, high-resolution spectroradiometer based on a virtually imaged phased array (VIPA) has been developed to meet the stringent requirements for high-precision vertical profiles of key atmospheric constituents. The instrument operates within the spectral range of 7535–7680 cm−1, achieving a spectral resolution of 0.023 cm−1 (690 MHz) with an integration time as short as 400 ms. Using this system, high-resolution atmospheric transmittance spectra in the 7535–7680 cm−1 band were successfully measured, and the vertical profile of water vapor was retrieved using the optimal estimation method (OEM). The results demonstrate that the novel VIPA-based spectroradiometer enables rapid acquisition of high-resolution atmospheric transmittance spectra over a broad spectral range, providing a robust and effective new approach for remote sensing of key atmospheric constituents. To the best of our knowledge, this represents the first successful application of a VIPA-based spectroradiometer for retrieving vertical profiles of atmospheric constituents.
