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	Improvement of miniature grating spectrometers
	Huaidong Yang ; Li Xu ; Kexin Chen ; Xingyue Huang ; Qingsheng He ; Guofan Jin
	2010-05-10 ; 2010-05-10
会议名称	Proceedings of the SPIE - The International Society for Optical Engineering ; Advanced Materials and Devices for Sensing and Imaging III ; Beijing, China ; INSPEC
关键词	Practical/ spectrometers/ miniature grating spectrometers freeform optics super-resolution restoration method/ A0765 Optical spectroscopy and spectrometers
中文摘要	The trade-off between resolution and signal to noise ratio is a shackle to develop high performance miniature grating spectrometers. Concentrating on breaking this shackle, freeform optics and super-resolution restoration method for miniature grating spectrometers are proposed in this paper. Substituting a varying sagittal surface for a toroidal one, not only aberrations along dispersive direction can be reduced, but also aberrations perpendicular to dispersive direction can be reduced in a broad spectral range. This means both resolution and throughput would be multiplied. To reduce the remnant imperfection of system, subpixel-deconvolution process may be supplemented. By subpixel reconstruction, under-sampling due to finite pixel size of array detector would be got rid of. By deconvolution, blurring duo to slit and other system imperfection would be eliminated. Consequently, resolution and throughput would be further increased.
会议录出版者	SPIE - The International Society for Optical Engineering ; USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19379]
专题	清华大学
推荐引用方式 GB/T 7714	Huaidong Yang,Li Xu,Kexin Chen,et al. Improvement of miniature grating spectrometers[C]. 见:Proceedings of the SPIE - The International Society for Optical Engineering, Advanced Materials and Devices for Sensing and Imaging III, Beijing, China, INSPEC.

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