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浏览/检索结果: 共13条，第1-10条 帮助 限定条件 发表日期：2005    内容类型：会议论文     已选(0)清除 条数/页：5101520253035404550556065707580859095100   排序方式：请选择作者升序作者降序题名升序题名降序发表日期升序发表日期降序提交时间升序提交时间降序 High-power InGaAsVCSEL's single devices and 2-D arrays - art. no. 602002 会议论文 2005 Li T.; Ning Y. Q.; Sun Y. F.; Qin L.; Yan C. L.; Liu Y.; Wang L. J. 收藏  |  浏览/下载：6/0  |  提交时间：2013/03/28 Study of dynamic response on a MOEMS 22 optical switch (EI CONFERENCE) 会议论文 Optical Transmission, Switching, and Subsystems II, November 9, 2004 - November 11, 2004, Beijing, China Sun D.; Dong W.; Guo W.; Liu C.; Wang G.; Yan X.; Xu B.; Chen W. 收藏  |  浏览/下载：20/0  |  提交时间：2013/03/25 The MOEMS 22 optical switch with slant lower electrode and with torsion beam on silicon is designed and analyzed theoretically. Analytical formulae for the squeeze film damping coefficient and the squeeze film damping moment on the cantilever beam of the optical switch are derived. Based on the torsion dynamics theory  the technique and relative results are presented for analyzing the actuating voltage and the switch time. The optimized result of parameters is as: length  width and thickness of the torsion beam are 700  12 and 10 m  length and width of the cantilever beam are 1900 and 1000 m  length and width of the balance beam are 100 and 1000 m  shortest spacing between the upper and lower electrodes is 0.05 m  and highness of the lower electrode is 55 m  respectively. The actuating voltage is less than 10 V  and the switching time of Ton and Toff are 1.30ms and 1.25ms  respectively. The computed results show that the air squeeze film damping is an important factor for the study of dynamic response on MOEMS optical switch.   980nm bottom-emitting VCSEL with an output power of 1.95W 会议论文 2005 Sun Y. F.; Ning Y. Q.; Jin Z. H.; Qin L.; Yan C. L.; Wang C.; Liu Y.; Tao G. T.; Chu G. Q.; Liu J.; Wang L. J. 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/28 Vertical-external-cavity surface-emitting lasers operating at different wavelength: design, numerical simulation, and characteristics - art. no. 602004 会议论文 2005 Yan C. L.; Qin L.; Shan X. N.; Lu G. G.; He C. F.; Sun Y. F.; Li T.; Ning Y. Q.; Wang L. J.; Jiang H. L. 收藏  |  浏览/下载：9/0  |  提交时间：2013/03/28 High-power InGaAs VCSEL's single devices and 2-D arrays (EI CONFERENCE) 会议论文 Optoelectronic Materials and Devices for Optical Communications, November 7, 2005 - November 10, 2005, Shanghai, China Li T.; Ning Y.; Sun Y.; Qin L.; Yan C.; Liu Y.; Wang L. 收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25 We report on bottom-emitting vertical-cavity surface-emitting lasers (VCSEL's) and laser arrays providing high output powers in the 980-nm wavelength regime. Single devices with active diameters of 500 m show high output powers of 1.95 W at room temperature. Its threshold current is 510 mA  and the maximum spatially averaged optical power density is 0.93 kW/cm2. A 16 elements array with 200m aperture size (250m center spacing) of individual elements shows a CW output power of 1.21 W at room temperature  resulting in a average optical power density of 1KW/cm2. The threshold current of the array is 1.32A and the lasing peak wavelength is 981.9 nm. The distinction of emission spectrums between the single device and the array is discussed.   High-power VCSELs single devices aid 2-D arrays (EI CONFERENCE) 会议论文 ICO20: Lasers and Laser Technologies, August 21, 2005 - August 26, 2005, Changchun, China Sun Y.; Ning Y.; Li T.; Shan X.; Lu G.; He C.; Qin L.; Yan C.; Liu Y.; Wang L. 收藏  |  浏览/下载：11/0  |  提交时间：2013/03/25 The high power bottom-emitting vertical-cavity surface-emitting lasers (VCSELs) and laser arrays emitting at 980 nm are reported. Extensive investigations on size scaling behavior of thermal properties of single devices show limits of attainable output characteristics. The maximum continuous wave (CW) output power at room temperature of single devices with aperture size up to 500 m is as high as 1.95 W. The key characteristics such as maximum output power  wavelength and thermal resistance are discussed. The bottom-emitting arrays of 16 elements and 200 m aperture size of individual elements show output power of CW 1.35 W at room temperature. The far-field angle is below 17 for all driving current  which is very favorable for focusing or collmating optics.   Vertical-external-cavity surface-emitting lasers operating at different wavelength: Design, numerical simulation, and characteristics (EI CONFERENCE) 会议论文 Optoelectronic Materials and Devices for Optical Communications, November 7, 2005 - November 10, 2005, Shanghai, China Yan C.; Qin L.; Shan X.; Lu G.; He C.; Sun Y.; Li T.; Ning Y.; Wang L.; Jiang H. 收藏  |  浏览/下载：12/0  |  提交时间：2013/03/25 We describe design  numerical simulation and characteristics of high-power optical pumped VECSELs at different wavelength (980nm  and 1300nm). The device design realizes the integrating diode-pumped lasers with vertical-cavity surface-emitting laser structure  drawing on the advantages of both. With periodical gain element structure  optical pumped VECSEL is scalable to watt level output. The characteristics such as threshold condition and output power are calculated theoretically. An optimum number of quantum wells and external mirror reflectivity are obtained from the calculation results  and the thermal characteristic is also considered. Finally the calculation results also predict high output power in this kind of device structure.   Theoretical analysis of 980nm high power vertical external-cavity surface-emitting semiconductor laser (VECSEL) - art. no. 60280X 会议论文 2005 He C. F.; Lu G. G.; Shan X. N.; Sun Y. F.; Li T.; Qin L.; Yan C. L.; Ning Y. C.; Wang L. J. 收藏  |  浏览/下载：7/0  |  提交时间：2013/03/28 980nm high power vertical external-cavity surface-emitting semiconductor lasers (VECSEL) - art. no. 602003 会议论文 2005 Lu G. G.; He C. F.; Shan X. N.; Li T.; Sun Y. F.; Qin L.; Yan C. L.; Ning Y. Q.; Wang L. J. 收藏  |  浏览/下载：10/0  |  提交时间：2013/03/28 High-power VCSELs single devices and 2-D arrays - art. no. 60280F 会议论文 2005 Sun Y. F.; Ning Y. Q.; Li T.; Shan X. N.; Lu G. G.; He C. F.; Qin L.; Yan C. L.; Liu Y.; Wang L. J. 收藏  |  浏览/下载：16/0  |  提交时间：2013/03/28