Results 81 to 90 of about 1,533,069 (297)
Advanced Functional Materials, EarlyView.Ferroelectric tunnel junction devices based on epitaxial undoped ferroelectric HfO2 films demonstrate stable switching endurance of over 106 switching cycles, low write voltages of ±3 V, 16 measured resistance states, and neuromorphic capability.
Markus Hellenbrand +13 more
wiley +1 more source
Passively Q-switched Pr:YLF laser
, 2011 We report passively Q-switched operation of a diode-pumped Pr:YLF laser using an AlInGaP on GaAs SEmiconductor Saturable Absorber Mirror.
A. B. Krysa +7 more
core +4 more sources
Passive Q-switched mode locking of double-clading Yb : fiber laser with ion-implanted GaAs
, 2004 We report the technique of the ion-implanted semi-insulating GaAs wafer used for passive Q-switched mode locking in double-cladding Yb:fiber laser. The wafer was implanted with 400-keV energy, 10(16)/cm(2) dose As+ ions, and was annealed at 600degreesC ...
Ma XY +5 more
core
Historical Foundation and Practical Guideline for Ferroelectric Switching Kinetic Studies
Advanced Functional Materials, EarlyView.The P and U pulses in the conventional PUND measurements are not identical because of the interplay between switching current and the measurement circuit components. This circuit effect can lead to a shift in polarization transients and misinterpreted physics in the switching kinetics.
Yi Liang, Pat Kezer, John T. Heron
wiley +1 more source
A Fiber Laser Using Graphene-Integrated 3-D Microfiber Coil
IEEE Photonics Journal, 2016 We demonstrate a state variable fiber pulse laser based on a graphene-integrated microfiber device. A 3-D microfiber coil integrated with graphene acts as a polarization-sensitive saturable absorber.
Cheng Li +4 more
doaj +1 more source
Diode-pumped Alexandrite lasers in Q-switched and cavity-dumped Q-switched operation
Optics Express, 2016 We present the first study of Q-switched Alexandrite lasers under continuous-wave diode-pumping with operation up to 10 kHz repetition rates in TEM00, with spatial quality M2 1.15. With a pulsed-diode dual-end-pumped design, pulse energy is scaled to a record level of 3 mJ.
Thomas, GM +3 more
openaire +3 more sources
Advanced Functional Materials, EarlyView.Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska +5 more
wiley +1 more source
Nanoscale Spatial Tuning of Superconductivity in Cuprate Thin Films via Direct Laser Writing
Advanced Functional Materials, EarlyView.Maskless direct laser writing enables local control of oxygen stoichiometry in epitaxial YBCO thin films under ambient conditions. Sub‐micrometer grayscale patterns with tunable optical response and superconducting transport properties are achieved.
Irene Biancardi +11 more
wiley +1 more source
Torque control of switched reluctance motors [PDF]
, 2011 This paper presents the performance of an instantaneous torque control method. The simulation and experimental results illustrate the capability of Switched Reluctance Motors (SRM) being used in the motor drive industry. Based on experimental data, the
Morón Fernández, Carlos +3 more
core
Sub-100ns solid-state laser Q-switched with double wall carbon nanotubes
, 2013 We report a Q-switched diode-pumped Nd:YAG laser at the 1064 nm with double wall carbon nanotube (DWNT) based saturable absorber. The laser pulses with energy of 2 μJ and 90 ns duration are obtained, and the average output power is 640 mW. To the best of
Wang, Yonggang +15 more
core +1 more source