Results 101 to 110 of about 1,856 (216)

A deterministic quantum dot micropillar single photon source with >65% extraction efficiency based on fluorescence imaging method

Scientific Reports, 2017
We report optical positioning of single quantum dots (QDs) in planar distributed Bragg reflector (DBR) cavity with an average position uncertainty of ≈20 nm using an optimized photoluminescence imaging method.
Shunfa Liu, Yuming Wei, Rongling Su, Rongbin Su, Ben Ma, Zesheng Chen, Haiqiao Ni, Zhichuan Niu, Ying Yu, Yujia Wei, Xuehua Wang, Siyuan Yu   +11 more
doaj   +1 more source

Optimization of high-reflective broadband subwavelength structure (SWSs) on distributed Bragg reflector

, 2011
Subwavelength structures (SWSs) on distributed Bragg reflector(DBR) is investigated to achieve broadband and high reflection. By proper optimization of each parameter, very high reflectivity can be obtained in broad sepctral range for only 5pairs of DBR.
Lee, Y.T., Ju, G.W., Na, B.H., Song, Young Min   +3 more
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Implant Isolation of AlGaAs Multilayer DBR

, 2015
AlGaAs distributed Bragg reflector (DBR) structures isolation by proton irradiation was studied. The evolution of n- and p-type DBR structures lateral sheet resistance with the irradiated proton dose was measured.
Coelho, A V P, Jagadish, Chennupati, Tan, Hark Hoe, Boudinov, H, Lippen, T V   +4 more
core   +1 more source

Growth and characterization of AIN/Si Distributed Bragg reflector

, 2022
Fen Bilimleri Enstitüsü, Nanoteknoloji Mühendisliği Ana Bilim Dalı, Nanoteknoloji Bilim DalıBu tez çalışmasında, Sivas Cumhuriyet Üniversitesi İleri Teknoloji Araştırma ve Uygulama Merkezi (CÜTAM)'nde bulunan Nanovak NVTS-400 magnetron püskürtme sistemi ...
Kaynar, Emine
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A high-frequency accelerometer based on distributed bragg reflector fiber laser

, 2014
We propose an optical accelerometer based on distributed Bragg reflector (DBR) fiber laser sensor. The transducer's vibration reduces the birefringence of the preloaded fiber laser and consequently changes the beat frequency of the two orthogonally ...
Lu, C, Lai, CC, Tam, HY, Yu, K, Zhao, Y, Wu, C   +5 more
core   +1 more source

Tamm-cavity terahertz detector

Nature Communications
Efficiently fabricating a cavity that can achieve strong interactions between terahertz waves and matter would allow researchers to exploit the intrinsic properties due to the long wavelength in the terahertz waveband.
Xuecou Tu, Yichen Zhang, Shuyu Zhou, Wenjing Tang, Xu Yan, Yunjie Rui, Wohu Wang, Bingnan Yan, Chen Zhang, Ziyao Ye, Hongkai Shi, Runfeng Su, Chao Wan, Daxing Dong, Ruiying Xu, Qing-Yuan Zhao, La-Bao Zhang, Xiao-Qing Jia, Huabing Wang, Lin Kang, Jian Chen, Peiheng Wu   +21 more
doaj   +1 more source

Highefficiency InGaAs/AlGaAs quantum well distributed Bragg reflector laser with curved grating

, 2020
An InGaAs quantum well curved distributed Bragg reflector (DBR) laser designed for high efficiency and high wavelength purity operation is demonstrated. The laser was fabricated by a simple process without regrowth.
Masahiro Uemukai, Kazutoshi Kitano, Toshiaki Suhara, Naoyuki Shimada   +3 more
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Absorption loss influence on optical characteristics of multilayer distributed Bragg reflector: wavelength-scale analysis by the method of single expression

, 2010
Electrodynamical model of a classical distributed Bragg reflector (DBR) consisting of alternating quarter-wave layers of high and low permittivity is considered at the plane wave normal incidence.
T.H. Baghdasaryan, B. Witzigmann, F. Roemer, H.V. Baghdasaryan, T.M. Knyazyan   +4 more
core   +1 more source

Time dependence of wet oxidized AlGaAs/GaAs distributed Bragg reflectors

, 2005
The time dependence of wet oxidized AlGaAs/GaAs in a distributed Bragg reflector (DBR) structure has been studied by mean of transmission electron microscopy and Raman spectroscopy.
Li, RY, Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, POB 912, Beijing 100083, Peoples R China. 电子邮箱地址: ryli@red.semi.ac.cn, Li RY, Xu B, Guo X, Chen M, Wang ZG, Jin P   +6 more
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Coupled AlxGa1-xAs-AlAs distributed Bragg reflectors for high brightness AlGaInP light emitting diodes

, 1998
A novel coupled distributed Bragg reflector (DBR) with double thickness periods was theoretically analyzed based on the spontaneous radiation properties of high brightness AlGaInP light emitting diodes(LED).
Wang GH Chinese Acad Sci Inst Semicond Natl Engn Res Ctr Optoelect Devices POB 912 Beijing 100083 Peoples R China., Ma XY, Zhang YF, Chen LH, Peng HI, Li YZ, Wang GH, Wang ST   +7 more
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