Results 41 to 50 of about 75,024 (299)

Tunable microwave signal generator with an optically-injected 1310nm QD-DFB laser [PDF]

, 2013
Tunable microwave signal generation with frequencies ranging from below 1 GHz to values over 40 GHz is demonstrated experimentally with a 1310nm Quantum Dot (QD) Distributed-Feedback (DFB) laser. Microwave signal generation is achieved using the period 1
Antonio Hurtado, Bhattacharya, Carpintero, Chan, Chan, Erneux, Fice, Hurtado, Hurtado, Ian D. Henning, Jesse Mee, Juan, Liu, Luke F. Lester, Michael J. Adams, Mohsen Nami, Newell, Pochet, Pochet, Qi, Quirce, Sooudi, Su, Su, Wieczorek, Yamamoto   +25 more
core   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Demonstration of a heterogeneously integrated III-V/SOI single wavelength tunable laser [PDF]

, 2013
A heterogeneously integrated III-V-on-silicon laser is reported, integrating a III-V gain section, a silicon ring resonator for wavelength selection and two silicon Bragg grating reflectors as back and front mirrors.
Bordel, D, Duan, GH, Fedeli, JM, Jany, C, Keyvaninia, Shahram, Lamponi, M, Le Liepvre, A, Lelarge, F, Make, D, Roelkens, Günther, Van Thourhout, Dries   +10 more
core   +2 more sources

On the Lightweight Potential of Laser Additive Manufactured NiTi Triply Periodic Minimal Sheet Lattices

Advanced Engineering Materials, EarlyView.
This study explores the lightweight potential of laser additive‐manufactured NiTi triply periodic minimal surface sheet lattices. It systematically investigates the effects of relative density and unit cell size on surface quality, deformation recovery, compression behavior, and energy absorption.
Haoming Mo, Shuo Qu, Shiming Gao, Xu Song   +3 more
wiley   +1 more source

Tunable Brillouin and Raman microlasers using hybrid microbottle resonators

Nanophotonics, 2019
We realized a tunable Brillouin laser and a tunable Raman laser by using ultrahigh-quality-factor (Q) hybrid microbottle resonators. The whispering-gallery-mode microresonator-based Brillouin and Raman lasers possess unique advantages (e.g. low threshold,
Zhu Song, Xiao Bowen, Jiang Bo, Shi Lei, Zhang Xinliang   +4 more
doaj   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Experimental Demonstration of π Equivalent Phase-Shifted SBG Laser With Controlled Distributed Phase Shift

IEEE Photonics Journal, 2019
We designed and fabricated a π equivalent phase-shifted sampled Bragg grating (SBG) semiconductor laser with a controlled distributed phase shift. The phase shift is equivalently realized with reconstruction-equivalent-chirp (REC) technique.
Rulei Xiao, Runze Liu, Yating Zhou, Zhenxing Sun, Jun Lu, Yuechun Shi, Xiangfei Chen   +6 more
doaj   +1 more source

Air‐Pressure–Actuated Vibroacoustic Metamaterial With Tunable Bandgap: Design, Modeling, and Characterization

Advanced Engineering Materials, EarlyView.
This article presents the design, modeling, and characterization of air‐pressure–actuated programmable vibroacoustic metamaterials (PVAMM). The study focuses on leveraging air pressure to dynamically tune resonance frequencies for effective noise attenuation.
William Kaal, Michael M. Becker, Sarah C. L. Fischer   +2 more
wiley   +1 more source

Semiconductor Laser with Electrically Modulated Frequency

Photonics
We propose a novel method for controlling the frequency of semiconductor lasers. This technique facilitates the production of devices with fast frequency tuning and intrinsic linearization of laser frequency sweeps.
Boris Laikhtman, Gregory Belenky, Sergey Suchalkin   +2 more
doaj   +1 more source

Highly Efficient Nanosecond 1.7 μm Fiber Gas Raman Laser by H₂-Filled Hollow-Core Photonic Crystal Fibers

Crystals, 2020
We report here a high-power, highly efficient, wavelength-tunable nanosecond pulsed 1.7 μm fiber laser based on hydrogen-filled hollow-core photonic crystal fibers (HC-PCFs) by rotational stimulated Raman scattering.
Hao Li, Wenxi Pei, Wei Huang, Meng Wang, Zefeng Wang   +4 more
doaj   +1 more source