Results 21 to 30 of about 299,353 (257)
Random Distributed Feedback Fiber Laser [PDF]
Optics and Photonics News, 2010 Peer ...
Turitsyn, S. K. +8 more
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Photonics, 2019 The extension of the available spectral range covered by quantum cascade lasers (QCL) would allow one to address new molecular spectroscopy applications, in particular in the long wavelength domain of the mid-infrared.
Hoang Nguyen Van +5 more
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Score distributions for Pseudo Relevance Feedback [PDF]
Information Sciences, 2014 Abstract Relevance-Based Language Models, commonly known as Relevance Models, are successful approaches to explicitly introduce the concept of relevance in the statistical language modelling framework of Information Retrieval. These models achieve state-of-the-art retrieval performance in the Pseudo Relevance Feedback task.
Javier Parapar +2 more
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Distributed Feedback Optimisation for Robotic Coordination
2022 American Control Conference (ACC), 2022 Feedback optimisation is an emerging technique aiming at steering a system to an optimal steady state for a given objective function. We show that it is possible to employ this control strategy in a distributed manner. Moreover, we prove asymptotic convergence to the set of optimal configurations.
Antonio Terpin +4 more
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The Feedback Control For Distributed Systems
, 2017 We study the problem of synthesis of lumped sources control for the objects with distributed parameters on the basis of continuous observation of phase state at given points of object. In the proposed approach the phase state space (phase space) is beforehand somehow partitioned at observable points into given subsets (zones).
Kamil R. Aida-zade, Cemal Ardil
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Two-Segment Gain-Coupled Distributed Feedback Laser
IEEE Photonics Journal, 2018 A two-segment regrowth-free gain-coupled distributed feedback (DFB) laser monolithically integrated different gain contrast segments was proposed, realizing both wavelength-tunable (5 nm) and wavelength stabilization characteristics, controlled by a ...
Feng Gao +11 more
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Accumulation of Distributed Phase Shift in Distributed-Feedback Resonators
IEEE Photonics Journal, 2019 Distributed-feedback waveguide lasers based on Bragg-grating resonators generate ultranarrow-linewidth emission. Oscillation at the center of the reflection band ensures maximum reflectivity, hence minimum linewidth. The required $\pi / 2$ phase shift is
Cristine Calil Kores +4 more
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MAPbBr3 First‐Order Distributed Feedback Laser with High Stability
Advanced Photonics Research, 2023 A green‐emitting perovskite first‐order distributed feedback (DFB) laser based on the methylammonium lead bromide (MAPbBr3) with high stability is demonstrated for the first time.
Cheng Chang +3 more
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Plasmonic near field transducer of nanocomposite with distributed feedback
AIP Advances, 2023 In this paper, we present a novel near field transducer (NFT) design concept for heat assisted recording. In this design, metal bars separated by thin dielectric are used to form a resonance plasmonic grating with distributed feedback (DFB).
Tianxiang Du +4 more
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Second-harmonic generation within a random fiber laser
High Power Laser Science and EngineeringOptical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve.
Yousi Yang +8 more
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