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	Epitaxially-Stacked High Efficiency Laser Diodes Near 905 nm 期刊论文 OAI收割 IEEE PHOTONICS JOURNAL, 2022, 卷号: 14, 期号: 6 作者: Zhao, Yuliang; Yang, Guowen; Zhao, Yongming; Tang, Song; Lan, Yu \| 收藏 \| 浏览/下载：35/0 \| 提交时间：2022/11/08 Epitaxial growth Resistance Doping Optical losses Optical device fabrication Stacking Optical refraction Epitaxial stacking high efficiency laser diode low optical loss n-doping concentration power scaling specific resistance tunnel junction
	The Design of the Cooke Triplet Antenna in Terahertz Band 期刊论文 OAI收割 IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2019, 卷号: 18, 期号: 10, 页码: 2199-2203 作者: Liu, Zhe; Zhang, Dehai; Meng, Jin \| 收藏 \| 浏览/下载：49/0 \| 提交时间：2019/12/17 Antennas Diffraction Lenses Image resolution Propagation losses Gain Optical diffraction Aberration Cooke triplet diffraction multilens antenna quasi-optical method
	Simultaneous mapping of reflectance, transmittance and optical loss of highly reflective and anti-reflective coatings with two-channel cavity ring-down technique 期刊论文 OAI收割 Optics Express, 2017, 卷号: 25, 期号: 5, 页码: 5807-5820 作者: Cui, Hao; Li, Bincheng; Xiao, Shilei; Han, Yanling; Wang, Jing \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2018/11/20 Antireflection coatings - Gravity waves - Light measurement - Mapping - Mirrors - Optical losses - Reflective coatings
	Improved atom number with a dual color magneto-optical trap 期刊论文 OAI收割 CHINESE PHYSICS B, 2012, 卷号: 21, 期号: 4 Cao, Q; Luo, XY; Gao, KY; Wang, XR; Chen, DM; Wang, RQ 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/09/17 NEUTRAL ATOMS OPTICAL TRAP VAPOR-CELL LOSSES
	Light Propagation in Curved Silver Nanowire Plasmonic Waveguides 期刊论文 OAI收割 NANO LETTERS, 2011, 卷号: 11, 期号: 4, 页码: 1603 Wang, WH; Yang, Q; Fan, FR; Xu, HX; Wang, ZL 收藏 \| 浏览/下载：16/0 \| 提交时间：2013/09/18 ELECTROMAGNETIC ENERGY-TRANSPORT SUBWAVELENGTH-DIAMETER SILICA SURFACE-PLASMON METALLIC NANOWIRES THIN-FILMS ELECTRICAL DETECTION DIFFRACTION LIMIT OPTICAL PLASMONS LOSSES EXCITATION
	Design of compound Fresnel-R lenses for new high-efficient photovoltaic concentrator (EI CONFERENCE) 会议论文 OAI收割 Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII, August 1, 2010 - August 4, 2010, San Diego, CA, United states 作者: Liu H.; Liu H.; Liu H. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 A new design of compound Fresnel-R concentrator is presented which is composed of two lenses: a primary lens (Fresnel lens) that works by total internal reflection at outer facets but refraction at inner facets and a secondary lens that works by refraction. In contrast to previous Fresnel lens concentrator this design increases the acceptance angle improves the irradiance uniformity on the solar cell and reduces the aspect ratio significantly. Another outstanding advantage of this concentrator is the fact that it mainly works by performing total internal reflection reducing chromatic dependence as well as Fresnel losses. An optical efficiency more than 80% can be achieved. Moreover in order to reduce the influence of manufacture accuracy and to increase the optical efficiency further the central part of the bottom of the secondary lens which directly adhered to the solar cell is designed as a cone-shaped prism to collect the sunlight that doesn't reach the solar cell. 2010 SPIE.
	Optimization procedure for design of heliostat field layout of a 1MWe solar tower thermal power plant (EI CONFERENCE) 会议论文 OAI收割 Solid State Lighting and Solar Energy Technologies, November 12, 2007 - November 14, 2007, Beijing, China 作者: Zhang H.; Zhang H. 收藏 \| 浏览/下载：18/0 \| 提交时间：2013/03/25 A procedure for designing and optimizing heliostat field layout of solar tower thermal power plant is developed. The ray tracing is used for the calculation of the optical efficiency of field. The mathematical theory of the calculation is derived. The parametric search algorithm which allows variation of the field parameters within a specified range is used for the optimization of field. The field layout is made automatically according to the no-blocking loss condition and the heliostats are located at the positions where the annual incident cosine value is higher. In this way the blocking and cosine losses are lowered. Because the optimization of the distance between fore-and-aft two rows of heliostat is avoided the computer time is reduced effectively. Using this procedure the heliostat field of a 1MWe solar tower power plant was designed. Four modes of layout including North-South cornfield North-South stagger Radial cornfield and Radial stagger were experimented and optimized respectively. The comparison of the field efficiency for the four optimized results was made. It is concluded that the North-South cornfield layout is the optimal decision for the 1MWe solar tower power plant.
	Polarizing beam splitter of deep-etched triangular-groove fused-silica gratings 期刊论文 OAI收割 opt. lett., 2008, 卷号: 33, 期号: 14, 页码: 1554, 1556 郑将军; 周常河; Feng Jijun; Wang Bo 收藏 \| 浏览/下载：760/138 \| 提交时间：2009/09/18 1550 nm Design conditions Extinction ratio (ER) Higher diffraction Highly efficient Littrow Optical (PET) (OPET) Optical society of America (OSA) Polarized waves Polarizing-beam splitter (PBS) Reflection losses Rigorous coupled-wave analysis (RCWA) TM polarizations
	Study on optical parts of MOEMS optical switch with low insertion loss (EI CONFERENCE) 会议论文 OAI收割 MEMS/MOEMS Technologies and Applications II, November 10, 2004 - November 12, 2004, Beijing, China 作者: Wang W.; Wang L.; Wang L.; Wang L.; Chen W. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 We study insertion losses of optical switch when the laser beam is propagating during the free space between two single mode fibers (SMFs) and the related assemblage challenges Then a new packaging structure is developed for the hybrid-integration of free-space MOEMS (micro-opto-electro-mechanical systems) chip with a silicon micromachined submount to improve alignment accuracy. The submount is designed to accommodate various free-space MOEMS chips with minimal active optical alignment thus reducing the packaging cost. The silicon submount has a central recess to place the MOEMS chip in sixteen V-grooves for optical fibers and micropits for micro ball lenses all bulk micromachined at the same time by a single anisotropic wet etching step. A corner compensation technique is employed to prevent erosion of the convex corners where different geometries meet. Through this assembling method the fiber micro ball lens can be aligned preciously thus reduced lateral and angular misalignment between them. Then total insertion losses can be decreased.