Results 131 to 140 of about 12,496 (247)

垂直腔面发射激光器DBR结构反射特性分析

, 2002
采用等效法布里-珀罗(F-P)腔方法对垂直腔面发射激光器(VCSEL)的上、下两层分布布喇格反射(DBR)结构的特性进行了研究，计算并讨论了上、下两层DBR结构在不同对称模型、不同周期数时对微腔结构的反射率的影响。得出 反射面DBR结构的周期数为30左右，出光面DBR结构的周期数20左右，易实现激光输出 ...
段晓峰, 张延生, 刘文楷, 张存善, 赵红东   +4 more
core  

Integrating Multidisciplinary DBR in Mechanical Engineering Education, Challenges, and Opportunities

This chapter explores the challenges and opportunities of integrating multidisciplinary design-based research (DBR) into mechanical engineering education.
Selvi, �zgün, Totuk, Onat Halis
core   +1 more source

SG-DBR激光器波长自动测试控制系统

Guangtongxin yanjiu, 2007
基于LabVIEW虚拟仪器平台,研制了一套可调谐取样光栅分布布拉格反射式（Sampled Grating Distributed Bragg Reflector,SG-DBR）激光器的波长自动测试控制系统。该系统能对四段式SG-DBR激光器进行电流扫描,采集、分析其输出光谱,生成SG-DBR激光器的“波长-电流”数据查询表;并且通过调用数据查询表,实现对SG-DBR激光器输出波长的控制。
陈磊, 张靖, 张瑞康, 江山, 毛谦   +4 more
doaj  

数值分析渐变DBR对垂直腔面发射激光器谐振腔模的影响

, 2006
通过数值分析研究了含线性渐变层的Al_(0.9)Ga_(0.1)As/Al_yGa_(1-y)As/GaAs/Al_xGa_(1-x)As DBR的光学特性及其对VCSEL谐振腔光学特性的影响,建立了渐变型DBR渐变层厚度与折射率的关系,通过特征矩阵法计算了突变GaAs/Al_(0.9)Ga_(0.1)As DBR和渐变型DBR的反射谱和反射相移,分析了渐变层对DBR反射率和反射相移的影响.对渐变型DBR,要使VCSEL谐振腔满足中心波长相位匹配条件 ...
曹玉莲, 王小东, 王青, 吴旭明, 谭满清, 何国荣   +5 more
core  

A high-resolution electrostatically actuated MEMS Fabry-Pérot tunable filter for LWIR imaging and sensing applications. [PDF]

Microsyst Nanoeng
Xu T, Yang H, Hou H, Xu S, Yao Z, Wang P, Li L, Zhang K, Zhao J.   +8 more
europepmc   +1 more source

Design of wide bandwidth, flat phase AxOy-GaAs DBR mirrors for vertical-cavity surface-emitting lasers

, 1999
In this paper we develop expressions for the design of asymmetric, graded interface DBR mirrors by using the concept of characteristic matrices.
Rakic, AD, Djurisic, AB, Majewski, M. L., Majewski, ML, Djurisic, A. B., Li, E. H., Li, EH, Rakic, A., Elazar, J. M., Elazar, JM, Djurisic, A.B., Rakic, A. D.   +11 more
core  

Strong Lateral Mode Confinement by Embedding SiO₂ Nanospheres in the DBRs of GaN-Based VCSELs. [PDF]

Micromachines (Basel)
Chen H, Lei M, Meng L, Chu Z, Chen W, Hu X.   +5 more
europepmc   +1 more source

Stimulated Cooling of a Frenkel Exciton-Polariton Bose-Einstein Condensate at Room Temperature. [PDF]

ACS Photonics
Khazanov TM, Noble CA, Musser AJ.
europepmc   +1 more source

Ultrafast optical gating in a nonlinear lithium niobate microcavity. [PDF]

Sci Adv
Karni O, Vaswani C, Chervy T.
europepmc   +1 more source

Emerging Dolutegravir Resistance Among Children on Antiretroviral Therapy With Virological Failure in Malawi: Results From a 2023 National Cross-Sectional Survey. [PDF]

J Int AIDS Soc
Bello G, Kabaghe AN, Pals S, Kalata NL, Bighignoli B, van Oosterhout JJ, Mkungudza J, Agyemang E, Zheng DP, Panja L, Matola WB, Chitenje M, Kampira E, Zeh C, Mvula B, Alvarez B, Kagoli M, Mzumara W, Simon KR, Namakhoma I, O'Malley G, Chipeta S, Nyirenda R, da Silva J, Wadonda N, For Malawi HIV Drug Resistance Surveillance Team.   +25 more
europepmc   +1 more source