中国开放科研知识云: 检索

Wideband slow-light propagation with no distortion in a nanofiber-plane-grating composite waveguide 期刊论文
optical engineering, 2016, 卷号: 55, 期号: 6
作者: Ma, Chengju; Ren, Liyong; Guo, Wenge; Fu, Haiwei; Xu, Yiping

收藏 | 浏览/下载：20/0 | 提交时间：2016/10/14

slow light waveguide nanofiber plane grating

On-line spectral diagnostic system for Dalian Coherent Light Source 期刊论文
nuclear instruments & methods in physics research section a-accelerators spectrometers detectors and associated equipment, 2015, 卷号: 783, 页码: 65-67
作者: Li, Chaoyang; Wei, Shen; Du, Xuewei; Du, Liangliang; Wang, Qiuping

收藏 | 浏览/下载：26/0 | 提交时间：2015/11/17

Free electron laser Spectrometer Variable-line-spacing plane grating Circular stage Resolving power

Applications of VUV extra-focus mechanism: high-performance dual-mode monochromator from VUV to soft X-ray 期刊论文
JOURNAL OF SYNCHROTRON RADIATION, 2015, 卷号: 22, 期号: 6, 页码: 1353—1358
作者: Xue, CF; Wu, YQ; Zou, Y; Xue, L; Guo, Z

收藏 | 浏览/下载：19/0 | 提交时间：2016/03/04

PLANE-GRATING-MONOCHROMATOR BEAMLINE OPTICS RANGE LIGHT SUPERCONDUCTORS RESOLUTION UNDULATOR

Advanced astigmatism-corrected tandem Wadsworth mounting for small-scale spectral broadband imaging spectrometer (EI CONFERENCE) 会议论文
Lei Y.; Lin G.-Y.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

Tandem gratings of double-dispersion mount make it possible to design an imaging spectrometer for the weak light observation with high spatial resolution high spectral resolution and high optical transmission efficiency. The traditional tandem Wadsworth mounting is originally designed to match the coaxial telescope and large-scale imaging spectrometer. When it is used to connect the off-axis telescope such as off-axis parabolic mirror it presents lower imaging quality than to connect the coaxial telescope. It may also introduce interference among the detector and the optical elements as it is applied to the short focal length and small-scale spectrometer in a close volume by satellite. An advanced tandem Wadsworth mounting has been investigated to deal with the situation. The Wadsworth astigmatism-corrected mounting condition for which is expressed as the distance between the second concave grating and the imaging plane is calculated. Then the optimum arrangement for the first plane grating and the second concave grating which make the anterior Wadsworth condition fulfilling each wavelength is analyzed by the geometric and first order differential calculation. These two arrangements comprise the advanced Wadsworth mounting condition. The spectral resolution has also been calculated by these conditions. An example designed by the optimum theory proves that the advanced tandem Wadsworth mounting performs excellently in spectral broadband. 2012 Optical Society of America.

Upgrade of beamline 3W1B at Beijing Synchrotron Radiation Facility 期刊论文
Chinese Physics C, 2013, 期号: 5, 页码: 91-94
作者: Yang DL(杨栋亮); Cui MQ(崔明启); Wang QP(王秋平); Zhao YD(赵屹东); Zheng L(郑雷)

收藏 | 浏览/下载：21/0 | 提交时间：2015/12/25

wiggler beamline monochromator varied-space plane grating spectral resolution linear polarization

A method on improvement of wavelength resolution of grating spectrometers 会议论文
IET International Conference on Communication Technology and Application, ICCTA 2011, Beijing, China, October 14, 2011 - October 16, 2011
作者: Song JH; Yang QS(杨乾锁); Zou NY

收藏 | 浏览/下载：11/0 | 提交时间：2017/06/20

Concave mirror Grating spectrometers Hollow cathode lamp Image plane Novel concept Optical structures Parallel beams Spectral line Spectrum range Wavelength resolution

Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China
Yu L.; Wang S.-R.; Lin G.-Y.

收藏 | 浏览/下载：21/0 | 提交时间：2013/03/25

Current research on space-based exploration for the ionosphere needs more advanced technologies. Because the spectral signals in the ionosphere distributing basically in the far-ultraviolet waveband are very weak. Usual spectrometer structures and detectors such as CCD can't receive enough information. Based on this principle of atmospheric sounding the imaging spectrometer prototype for ionosphere detection application was designed to solve the problem. This prototype consists of the telescope and the imaging spectrometer. The simple structure and small number of mirrors can help higher transmission efficiency be achieved and weak signals detection be implemented. The telescope is an off-axis parabolic mirror and the spectrometer is a modified Czerny-Turner spectral imaging system. Modified Czerny-Turner spectrometer contains a spherical mirror a fixed plane grating and a toroidal mirror. By adjusting the incident angle to the collimating mirror and using toroidal mirror coma and astigmatism were corrected well. We also optimize distances between the grating to the focusing mirror and the focusing mirror to the image plane to improve disadvantages of traditional Czerny-Turner structure. Designed results demonstrate that aberrations are substantially corrected and high image quality can be obtained in broad waveband. The photon counting Wedge-Strip-Anode detector with micro-channel planes as the receiving plane is accepted for the instrument prototype. The other photon counting 2-D detector responding well for weak light such as Cross-Delay line detector and MAMA detector can also be used for detection. The calibration and performances testing system is made of a vacuum system a deuterium lamp a monochrometer and the instrument prototype. Results obtained from the experiment show that the spectral resolution is 2.4 nm and the spatial resolution is 80 m. The other calibration experiments are running. The technology of the spectrometer prototype is important for the research and applications of ionosphere remote sensing. 2011 SPIE.

An Infrared Absorption Gas Detection System Applying Plane Blazed Grating 会议论文
作者: Wang, Hairong; Cen, Di; Men, Guangfei; Wang, Jianyun

收藏 | 浏览/下载：6/0 | 提交时间：2019/12/10

plane blazed grating mash gas infrared absorption