Results 21 to 30 of about 317,279 (257)
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
doaj +1 more source
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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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
doaj +1 more source
Smartphone Feedback: Using an iPhone to Improve the Distribution of Audio Feedback [PDF]
International Journal of Electrical Engineering & Education, 2011 Smartphones combine the flexibility of MP3 recorders and the connectivity of a PC in a discrete handheld device, thereby suggesting their application as a user friendly tool for giving recorded audio feedback efficiently. This paper describes a smartphone feedback methodology and presents findings from research on its use with 130 Level 5 (2nd year of ...
Nortcliffe, Anne, Middleton, Andrew
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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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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
doaj +1 more source
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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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
doaj +1 more source
Optofluidic distributed feedback dye laser [PDF]
2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, 2006 We demonstrated an optofluidic distributed feedback (DFB) dye laser on a poly(dimethylsiloxane) (PDMS) chip. Single-mode operation was obtained with 0.21 nm linewidth. We achieved nearly 60 nm continuously tunable output by mechanically varying the grating period.
Li, Zhenyu +4 more
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Modelling stem cell differentiation related processes—A practical overview for biologists
FEBS Letters, EarlyView.Stem cell differentiation is complex and difficult to control experimentally. This review introduces suitable computational modelling approaches that can support stem cell research, from mechanistic ODE and abstract models to multiscale and deep learning methods.
Ricco Zeegelaar +4 more
wiley +1 more source