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	Emprovement of miniature grating spectrometers - art. no. 682911
	Yang, Huaidong ; Xu, Li ; Chen, Kexin ; Huang, Xingyue ; He, Qingsheng ; Jin, Guofan
	2010-05-10 ; 2010-05-10
会议名称	ADVANCED MATERIALS AND DEVICES FOR SENSING AND IMAGING III ; Conference on Advanced Materials and Devices for Sensing and Imaging III ; Beijing, PEOPLES R CHINA ; Web of Science
关键词	spectrometer resolution signal to noise ratio freeform optics super-resolution restoration Engineering, Electrical & Electronic Materials Science, Multidisciplinary Optics
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-INT SOC OPTICAL ENGINEERING ; BELLINGHAM ; 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/19231]
专题	清华大学
推荐引用方式 GB/T 7714	Yang, Huaidong,Xu, Li,Chen, Kexin,et al. Emprovement of miniature grating spectrometers - art. no. 682911[C]. 见:ADVANCED MATERIALS AND DEVICES FOR SENSING AND IMAGING III, Conference on Advanced Materials and Devices for Sensing and Imaging III, Beijing, PEOPLES R CHINA, Web of Science.

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