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	Roughness Reduction of Large-Area High-Quality Thick Al Coatings for Large-Size Echelle Gratings by Chemical Mechanical Polishing 期刊论文 OAI收割 Nanoscience and Nanotechnology Letters, 2018, 卷号: 10, 期号: 1, 页码: 69-74 作者: Song, C.; Li, Z. Z.; Zhang, X.; Li, Q.; Yang, H. G. \| 收藏 \| 浏览/下载：20/0 \| 提交时间：2019/09/17 Thick Al Coatings Echelle Grating Chemical Mechanical Polishing design telescope mirrors Science & Technology - Other Topics Materials Science Physics
	Study on spectrograph for ionosphere: A broadband imaging instrument prototype for far-ultraviolet (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications, May 24, 2011 - May 26, 2011, Beijing, China 作者: Wang S.-R.; Lin G.-Y.; Yu L. 收藏 \| 浏览/下载：35/0 \| 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.
	Efficient excitations of radially and azimuthally polarized Nd ³⁺:YAG ceramic microchip laser by use of subwavelength multilayer concentric gratings composed of Nb2O5/SiO2 期刊论文 OAI收割 opt. express, 2008, 卷号: 16, 期号: 14, 页码: 10841, 10848 Li Jian-Lang; Ueda Ken-Ichi; Zhong Lan-Xiang; Musha Mitsuru; Shirakawa Akira; Sato Takashi 收藏 \| 浏览/下载：1305/222 \| 提交时间：2009/09/18 Axisymmetric Cylindrical vector beams Grating mirrors Laser diode (LD) Microchip lasers Multilayer gratings Nd:YAG ceramics Output couplers Sub wavelength Two types