Results 91 to 100 of about 5,425 (221)

Coupling an epitaxial quantum dot to a fiber-based external-mirror microcavity

open access: yes, 2009
We report the coupling of individual InAs quantum dots (QDs) to an external-mirror microcavity. The external mirror is bonded to a fiber and positioned above a semiconductor sample consisting of a QD-containing GaAs layer on top of a distributed Bragg ...
Flagg, Edward B.   +4 more
core   +1 more source

Wavelength tunable lasers in future optical communication systems [PDF]

open access: yes, 2008
Monolithic tunable lasers (TL) have been an important component in dense wavelength division multiplexed (DWDM) systems mainly because of their ability to reduce inventory costs associated with different part numbers for fixed wavelength distributed ...
Anandarajah, Prince M.   +3 more
core   +1 more source

Using Bayesian Optimization to Increase the Efficiency of III‐V Multijunction Solar Cells

open access: yesAdvanced Theory and Simulations, Volume 9, Issue 2, February 2026.
Technology Computer Aided Design (TCAD) modeling is crucial for designing complex optoelectronic devices like III‐V multijunction solar cells. Bayesian optimization is proposed as a robust method to address challenges in optimizing costly black‐box TCAD solvers.
Pablo F. Palacios, Carlos Algora
wiley   +1 more source

A hemispherical, high-solid-angle optical micro-cavity for cavity-QED studies [PDF]

open access: yes, 2006
We report a novel hemispherical micro-cavity that is comprised of a planar integrated semiconductor distributed Bragg reflector (DBR) mirror, and an external, concave micro-mirror having a radius of curvature $50\mathrm{\mu m}$. The integrated DBR mirror
Bhongale, S.   +10 more
core   +1 more source

SG-DBR激光器波长自动测试控制系统

open access: yesGuangtongxin 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   +4 more
doaj  

Low-threshold-current CW operation of 1.5 μm GaInAsP/InP bundle-integrated-guide distributed-Bragg-reflector (BIG-DBR) lasers

open access: yesElectronics Letters, 1985
Low-threshold-current and high-power operation of 1.5 μm GaInAsP/InP bundle-integrated-guide (BIG) DBR lasers were obtained. A single-mode operation temperature range of more than 70 deg was demonstrated around room temperature by shortening the active region to 100 μm.
Y. Tohmori   +3 more
openaire   +1 more source

A High Power and Ultrahigh Frequency Mode-Locked Laser Monolithically Integrated with an SOA [PDF]

open access: yes, 2015
We report 628 GHz and 1.20 THz pulse repetition frequencies with 142 mW peak powers from a passively mode-locked side-wall SGDBR laser integrated with an SOA, demonstrating high reproducibility, controllability and a wide operation ...
Arahira, Collar, Hou, Yanson
core   +1 more source

1380 nm VCSELs using surface-activated bonding of GaAs-based DBRs on a Ge substrate

open access: yesApplied Physics Express
A wafer-bonded vertical-cavity surface-emitting laser (VCSEL) was demonstrated by surface-activated bonding (SAB) of a GaAs-based distributed Bragg reflector (DBR) on a Ge substrate.
Tomomasa Watanabe   +8 more
doaj   +1 more source

Efficiency and Droop Improvement in GaN-Based High-Voltage Flip Chip LEDs

open access: yesInternational Journal of Photoenergy, 2014
The GaN-based high-voltage flip chip light-emitting diode (HVFC-LED) is designed and developed for the purpose of efficiency enhancement. In our design, the distributed Bragg reflector (DBR) is deposited at the bonded substrate to increase the light ...
Yen-Chih Chiang   +7 more
doaj   +1 more source

Enhanced fluorescence emission and collection in luminescent solar concentrators: A theoretical investigation of integrated surface gratings and wavelength-selective reflectors [PDF]

open access: yesAIP Advances
The Distributed Bragg Reflector (DBR) is a popular one-dimensional photonic crystal having a forbidden effect on photons within certain wavelength bands that can significantly reduce the surface escape loss in Luminescent Solar Concentrators (LSCs ...
Yi Wang   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy