Results 31 to 40 of about 47,639 (261)

Electrically injected VCSEL with a composite DBR and MHCG reflector.

Optics Express, 2019
We achieve the continuous-wave (CW) lasing of electrically-injected, first-of-their-kind vertical-cavity surface-emitting lasers (VCSELs) that use a subwavelength monolithic high-refractive-index-contrast grating (MHCG) mirror.
M. Gȩbski, J. Lott, T. Czyszanowski
semanticscholar   +1 more source

Effect of Dielectric Distributed Bragg Reflector on Electrical and Optical Properties of GaN-Based Flip-Chip Light-Emitting Diodes

Micromachines, 2018
We demonstrated two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with distributed Bragg reflector (DBR) and without DBR to investigate the effect of dielectric TiO2/SiO2 DBR on optical and electrical characteristics of FCLEDs.
Shengjun Zhou, Haohao Xu, Mengling Liu, Xingtong Liu, Jie Zhao, Ning Li, Sheng Liu   +6 more
doaj   +1 more source

InGaN Resonant-Cavity Light-Emitting Diodes with Porous and Dielectric Reflectors

Applied Sciences, 2020
InGaN based resonant-cavity light-emitting diode (RC-LED) structures with an embedded porous-GaN/n-GaN distributed Bragg reflector (DBR) and a top dielectric Ta2O5/SiO2 DBR were demonstrated.
Cheng-Jie Wang, Ying Ke, Guo-Yi Shiu, Yi-Yun Chen, Yung-Sen Lin, Hsiang Chen, Chia-Feng Lin   +6 more
doaj   +1 more source

Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser [PDF]

, 2012
A compact semiconductor mode-locked laser (MLL) is presented that demonstrates strong passive Q-switched mode-locking over a wide range of drive conditions.
Cheung, Flynn, G. Mezösi, Heck, Huttl, Lu, Marc Sorel, Marco Zanola, Michael J. Strain, Stolarz, Strain, Thompson, Thompson   +12 more
core   +1 more source

Numerical and experimental investigation of GaN-based flip-chip light-emitting diodes with highly reflective Ag/TiW and ITO/DBR Ohmic contacts.

Optics Express, 2017
We demonstrate two types of GaN-based flip-chip light-emitting diodes (FCLEDs) with highly reflective Ag/TiW and indium-tin oxide (ITO)/distributed Bragg reflector (DBR) p-type Ohmic contacts. We show that a direct Ohmic contact to p-GaN layer using pure
Shengjun Zhou, Xingtong Liu, Yilin Gao, Yingce Liu, Mengling Liu, Zongyuan Liu, Chengqun Gui, Sheng Liu   +7 more
semanticscholar   +1 more source

Monolithically Integrated Tunable Three- Section All-Active DBR Laser Diodes With 30 nm Tuning Range

IEEE Photonics Journal, 2023
We present a monolithically integrated three-section all-active AlGaInAs/InP tunable distributed Bragg reflector (DBR) ridge waveguide laser diode that uses thermal tuning mechanism and mode-hopping tuning principle to achieve wide-range ...
Shaokang Chen, Dechao Ban, Yu Liu, Ming Li, Ninghua Zhu   +4 more
doaj   +1 more source

125 Gbit/s discretely tunable InP-on-silicon filtered feedback laser with sub-nanosecond wavelength switching times [PDF]

, 2018
A heterogeneously integrated InP-on-silicon fast tunable filtered feedback laser is demonstrated. The laser device consists of a main Fabry-Pérot cavity connected to an integrated arrayed waveguide grating of which the outputs form external cavities in ...
, Dhoore, Sören, Morthier, Geert, Roelkens, Günther   +3 more
core   +2 more sources

Dragon blood resin ameliorates steroid-induced osteonecrosis of femoral head through osteoclastic pathways

Frontiers in Cell and Developmental Biology, 2023
Objective: Dragon’s Blood resin (DBR) is a traditional medicinal substance renowned for its diverse pharmacological effects, which consists of potent anti-inflammatory, antioxidant and angiogenic properties.
Yuhao Liu, Liang Mo, Hongduo Lu, Yangwenxiang Wei, Jiahao Zhang, Samuel Bennett, Jiake Xu, Jiake Xu, Chi Zhou, Bin Fang, Zhenqiu Chen   +10 more
doaj   +1 more source

High-efficiency sub-watt in-band-pumped single-frequency DBR Tm3+-doped germanate fiber laser at 1950 nm.

Optics Express, 2018
Based on a 1.8-cm-long heavily Tm3+-doped germanate fiber and being in-band-pumped by a 1610 nm single-mode laser, a high-efficiency and high-power single-frequency distribute Bragg reflector (DBR) fiber laser emitting at 1950 nm is demonstrated. The DBR
X. Guan, C. Yang, T. Qiao, Wei Lin, Qilai Zhao, Guowu Tang, Guoquan Qian, Q. Qian, Zhongmin Yang, Shanhui Xu   +9 more
semanticscholar   +1 more source

On the Limits of Liberalism in Participatory Environmental Governance: Conflict and Conservation in Ukraine\u27s Danube Delta [PDF]

, 2015
Participatory management techniques are widely promoted in environmental and protected area governance as a means of preventing and mitigating conflict.
Adams, Agrawal, Agrawal, Allina-Pisano, Asad, Assche, Assche, Barber, Bassov, Berkes, Blaser, Brosius, Buscher, Buscher, Chernysheva, Clastres, Cleaver, Cleaver, Darden, DBR Administration, Dearden, Fedorenko, Fedorenko, Fitzpatrick, Francis, Heatherington, Held, Hickey, Hindess, Igoe, Kelly, Kovalenko, Koyano, Li, Mannigel, Mansuri, Mosse, Mouffe, Nadasdy, Nadasdy, Nazparzy, O'Riordan, Oushakine, Pederson, Pelkmans, Perice, Prell, Prigarin, Prigarin, Richardson, Sanders, Shevchenko, Shibutani, Shtefan, Silantieva-Skorobogatova, Silikova, Smirnov, Stringer, Stringer, Taylor, Udovichenko, Uriadovyi kurier, Vivieros de Castro, Voloshkevich, Vorotniuk, Walley, Wanner, Weiner, West, White, World Bank   +70 more
core   +2 more sources