Results 31 to 40 of about 36,998 (231)
Current Oncology, 2021 Duodenal obstruction is often accompanied with unresectable malignant distal biliary obstruction in patients who have undergone biliary self-expandable metal stent (SEMS) placement.
Chi-Huan Wu +6 more
doaj +1 more source
Passively mode-locked semiconductor lasers and their applications [PDF]
, 2008 In this paper we present some characterizations of passively mode-locked semiconductor lasers. These lasers are multimode and they exhibit a modulation of their output power even though they are DC-biased.
Landais, Pascal +2 more
core +1 more source
EAM Modulated DBR Laser Array for TWDM-PON Applications [PDF]
, 2017 4 Channel DBR laser arrays are fabricated for use in optical line terminals of TWDM-PON systems. These combine 1.4Q InGaAsP material in the DBR with EAMs using the identical active layer design. A tuning range ~10 nm and extinction ratio of >27 dB are
Han, L. S. +6 more
core +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 +4 more
doaj +1 more source
22-GHz Modulation Bandwidth of Long Cavity DBR Laser by Using a Weakly Laterally Coupled Grating Fabricated by Focused Ion Beam Lithography [PDF]
, 2004 A 22-GHz directly modulated 3-dB bandwidth could be obtained by 1.3-mm-long weakly laterally coupled distributed Bragg reflector lasers fabricated by focused ion beam lithography.
Bach, L. +6 more
core +1 more source
Optimal design of thermal emitter based on DBR cavity model in thermal photovoltaic technology
Results in Optics, 2022 To ensure the necessary technical support for the long-term operation of the space vehicle, this paper studies the optimization technology of thermal emitter design in thermophotovoltaic technology.
Tan Min +4 more
doaj +1 more source
A hemispherical, high-solid-angle optical micro-cavity for cavity-QED studies [PDF]
, 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
Nanomaterials, 2023 Quantum dots (QDs) laser has become an important way to solve micro-application problems in many fields. However, single wavelength distributed Bragg reflector (DBR) has many limitations in practical applications, such as signal transmission.
Xueqiong Su +9 more
doaj +1 more source
Modelling pressure fluctuations during flow boiling in microchannels with inlet compressibility and resistance [PDF]
, 2009 Confined bubble growth during flow boiling at low pressures in microchannels generates pressure fluctuations that may cause transient flow reversals that disturb the flow distribution in heat sinks formed of parallel channels joined by plena.
Gedupudi, S +2 more
core
Epitaxial lift-off for solid-state cavity quantum electrodynamics
, 2015 We present a new approach to incorporate self-assembled quantum dots into a Fabry-P\'{e}rot-like microcavity. Thereby a 3$\lambda$/4 GaAs layer containing quantum dots is epitaxially removed and attached by van der Waals bonding to one of the microcavity
Greuter, Lukas +7 more
core +1 more source