中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共8条，第1-8条

帮助

条数/页：排序方式：
	Improvements in Brazed-Joint Properties of Silicon Nitride and Titanium Alloys Using Laser-Induced Microscale Rice Leaf Structures 期刊论文 OAI收割 MATERIALS, 2022, 卷号: 15, 期号: 19 作者: He, Jian-Guo; Dai, Shou-Jun; Zhao, Yang; Huang, Min; Liu, Yang \| 收藏 \| 浏览/下载：48/0 \| 提交时间：2022/10/28 laser-induced periodic surface structure roughness brazing microstructure laser welding
	FEM simulation on impact resistance of surface gradient and periodic layered bionic composites 期刊论文 OAI收割 COMPOSITE STRUCTURES, 2020, 卷号: 247, 页码: 9 作者: Wei ZQ(魏志全); Xu XH(许向红) \| 收藏 \| 浏览/下载：12/0 \| 提交时间：2020/08/26 Bio-inspired design Surface gradient structure Periodic layered structure Impact resistance
	Polarization-controlled microgroove arrays induced by femtosecond laser pulses 期刊论文 OAI收割 Journal of Applied Physics, 2018, 卷号: 123, 期号: 21, 页码: 6 作者: Garcell, E. M.; Guo, C. L. \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2019/09/17 periodic surface-structure irradiation picosecond ablation ti6al4v silicon grooves Physics
	Femtosecond laser-induced herringbone patterns 期刊论文 OAI收割 Applied Physics a-Materials Science & Processing, 2018, 卷号: 124, 期号: 6, 页码: 8 作者: Garcell, E. M.; Lam, B.; Guo, C. L. \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2019/09/17 periodic surface-structure semiconductors irradiation ablation dynamics pulses metals optics mixer Materials Science Physics
	Investigation of femtosecond laser-induced periodic surface structure on tungsten 期刊论文 OAI收割 guangxue xuebao/acta optica sinica, 2016, 卷号: 36, 期号: 5 作者: Li, Chen; Cheng, Guanghua; Razvan, Stoian 收藏 \| 浏览/下载：28/0 \| 提交时间：2016/10/14 Electromagnetic fields Electromagnetic waves Hydrophilicity Hydrophobicity Laser pulses Micromachining Periodic structures Surface structure Time domain analysis Tungsten Ultrashort pulses
	The Rectangular Waveguide Board Wall Slot Array Antenna Integrated with One Dimensional Subwavelength Periodic Corrugated Grooves and Artificially Soft Surface Structure 期刊论文 OAI收割 JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES, 2009, 卷号: 30, 期号: 4, 页码: 357-366 作者: Huang, Cheng; Zhao, Zeyu; Luo, Xiangang 收藏 \| 浏览/下载：25/0 \| 提交时间：2015/09/21 Subwavelength periodic corrugated grooves Artificially soft surface structure Surface wave Slot array antenna
	High power VCSEL device with periodic gain active region (EI CONFERENCE) 会议论文 OAI收割 Optoelectronic Materials and Devices II, November 2, 2007 - November 5, 2007, Wuhan, China 作者: Zhang Y.; Liu Y.; Liu Y.; Liu Y.; Qin L. 收藏 \| 浏览/下载：29/0 \| 提交时间：2013/03/25 High power vertical cavity surface emitting lasers with large aperture have been fabricated through improving passivation lateral oxidation and heat dissipation techniques. Different from conventional three quantum well structure a periodic gain active region with nine quantum wells was incorporated into the VCSEL structure with which high efficiency and high power operation were expected. The nine quantum wells were divided into three groups with each of them located at the antinodes of the cavity to enhance the coupling between the optical field and the gain region. Large aperture and bottom-emitting configuration was used to improve the beam quality and the heat dissipation. A maximum output power of 1.4W was demonstrated at CW operation for a 400m-diameter device. The lasing wavelength shifted to 995.5nm with a FWHM of 2nm at a current of 4.8A due to the internal heating and the absence of active water cooling. A ring-shape farfield pattern was induced by the non-homogeneous lateral current distribution in large diameter device. The light intensity at the center of the ring increased with increasing current. A symmetric round light spot at the center and single transverse mode operation with a divergence angle of 16 were observed with current beyond 4.8A.
	Vertical-cavity surface-emitting lasers with periodic gain structure (EI CONFERENCE) 会议论文 OAI收割作者: Wang L.; Wang L.; Wang L.; Qin L.; Sun Y. 收藏 \| 浏览/下载：19/0 \| 提交时间：2013/03/25 The periodic gain structure is used as the active region of vertical-cavity surface-emitting lasers which can enhance the effective coupling between gain regions and internal optical field. The high device performance is achieved. The maximum continuous-wave output power of large aperture device with active diameter up to 400 m is as high as 1.41 W at room temperature. The low threshold current is only 0.5 A which is lower than that of the conventional device with three quantum wells. 2006 Elsevier B.V. All rights reserved.