中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共5条，第1-5条

帮助

条数/页：排序方式：
	Theoretical analysis of emission characteristics of second-order distributed feedback semiconductor lasers (EI CONFERENCE) 会议论文 OAI收割 Semiconductor Lasers and Applications IV, October 18, 2010 - October 19, 2010, Beijing, China 作者: Liu Y.; Liu Y.; Qin L.; Liu Y.; Wang L. 收藏 \| 浏览/下载：24/0 \| 提交时间：2013/03/25 Based on the modified coupled-wave theory the emission characteristics including threshold gain photon density distribution in the cavity and external differential quantum efficiency for second-order DFB lasers are investigated. Numerical simulation results show that for given device structure with wavelength of 1.55 m the feedback coupling coefficient and the surface radiation coupling coefficient of the second-order grating have great influence on the emission characteristics of the device. By choosing different duty cycles of the grating we can change the two coupling coefficients which affect the emission characteristics. For an overall consideration an optimal duty cycle of 0.43 is chosen. The optimized results show that the device works without degeneracy modes and spatial burning hole. Besides the side-mode suppress ratio (SMSR) and external differential quantum efficiency reach as high as 42 dB and 47% respectively. 2010 SPIE.
	An efficient multiparty quantum key distribution scheme 期刊论文 OAI收割 INTERNATIONAL JOURNAL OF QUANTUM INFORMATION, 2005, 卷号: 3, 期号: 3, 页码: 555-560 作者: Zhang, ZJ; Man, ZX; Shi, SH 收藏 \| 浏览/下载：30/0 \| 提交时间：2015/07/15 multiparty quantum key distribution Bell's inequality single-photon state resource beam splitter two-photon Bell-state resource N-photon Greenberg-Horne-Zeilinger state
	X-ray emission studies in relativistic collisions of Li-like uranium ions with gaseous target 期刊论文 OAI收割 NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2005, 卷号: 235, 页码: 326-330 作者: Banas, D; Stohlker, T; Ionescu, DC; Beyer, HF; Bosch, F \| 收藏 \| 浏览/下载：16/0 \| 提交时间：2018/05/31 X-rays K-shell ionization He-like high-Z ions two-photon distribution
	X-ray emission studies in relativistic collisions of Li-like uranium ions with gaseous target 会议论文 OAI收割作者: Banas, D; Stohlker, T; Ionescu, DC; Beyer, HF; Bosch, F \| 收藏 \| 浏览/下载：12/0 \| 提交时间：2018/08/20 X-rays K-shell ionization He-like high-Z ions two-photon distribution
	An informational approach to the sinusoidal law of photon polarization 期刊论文 OAI收割 COMMUNICATIONS IN THEORETICAL PHYSICS, 2002, 卷号: 38, 期号: 3, 页码: 281-284 作者: Luo, SL \| 收藏 \| 浏览/下载：17/0 \| 提交时间：2018/07/30 photon polarization Fisher information Cramer-Rao bound two-person game binomial distribution