High-SNR snapshot multiplex spectrometer with sub-Hadamard-S matrix coding

We present a robust high signal-to-noise ratio (SNR) snapshot multiplex spectrometer with sub-Hadamard-S matrix coding. We demonstrated for the first time that the sub-Hadamard-S matrix coding could provide comparable SNR improvement with Hadamard-S matrix in Hadamard transform spectrometer (HTS). Normally, HTS should change the coding mask to obtain a reasonable spectrum result, causing unexpected time-consuming. An extra imaging path to collect the light intensity of the aperture is added in this paper. Both light intensity of the aperture and overlapped spectra are captured within one shot, turning Hadamard-S matrix coding into sub-Hadamard-S matrix coding. Simulations and experiments show that the proposed method could obtain comparable SNR improvement with the traditional HTS, maintaining snapshot.

[1]  David J. Brady,et al.  Multiframe image estimation for coded aperture snapshot spectral imagers. , 2010, Applied optics.

[2]  José M. Bioucas-Dias,et al.  A New TwIST: Two-Step Iterative Shrinkage/Thresholding Algorithms for Image Restoration , 2007, IEEE Transactions on Image Processing.

[3]  Qifeng Li,et al.  Improving the resolution and the throughput of spectrometers by a digital projection slit. , 2017, Optics express.

[4]  J. A. Decker,et al.  Experimental realization of the multiplex advantage with a hadamard-transform spectrometer. , 1971, Applied optics.

[5]  Dennis W Prather,et al.  Development of a digital-micromirror-device-based multishot snapshot spectral imaging system. , 2011, Optics letters.

[6]  Jiang Yue,et al.  High-throughput deconvolution-resolved computational spectrometer , 2014 .

[7]  Guangming Shi,et al.  Dual-camera design for coded aperture snapshot spectral imaging. , 2015, Applied optics.

[8]  N. Pitsianis,et al.  Static two-dimensional aperture coding for multimodal, multiplex spectroscopy. , 2006, Applied optics.

[9]  M E Gehm,et al.  Longwave infrared (LWIR) coded aperture dispersive spectrometer. , 2007, Optics express.

[10]  Henry Arguello,et al.  Snapshot colored compressive spectral imager. , 2015, Journal of the Optical Society of America. A, Optics, image science, and vision.

[11]  Liang Gao,et al.  Snapshot Image Mapping Spectrometer (IMS) with high sampling density for hyperspectral microscopy , 2010, Optics express.

[12]  M. Golay.  Multi-slit spectrometry. , 1949, Journal of the Optical Society of America.

[13]  Jing Han,et al.  Denoising analysis of Hadamard transform spectrometry. , 2014, Optics letters.

[14]  Jiang Yue,et al.  Denoising analysis of spatial pixel multiplex coded spectrometer with Hadamard H-matrix , 2018 .

[16]  Farnoud Kazemzadeh,et al.  Resolution- and throughput-enhanced spectroscopy using high-throughput computational slit , 2016, Optics letters.

[17]  Ashwin A. Wagadarikar,et al.  Single disperser design for coded aperture snapshot spectral imaging. , 2008, Applied optics.

[18]  M E Gehm,et al.  Single-shot compressive spectral imaging with a dual-disperser architecture. , 2007, Optics express.

[19]  N. Sloane,et al.  Hadamard transform optics , 1979 .

[20]  Ashwin A. Wagadarikar,et al.  Performance comparison of aperture codes for multimodal, multiplex spectroscopy. , 2007, Applied optics.

[21]  D. Brady,et al.  Coded aperture spectroscopy with denoising through sparsity. , 2012, Optics express.