Results 101 to 110 of about 171,254 (238)
The Influence of Laser Linewidth on the Brillouin Shift Frequency Accuracy of BOTDR
Applied Sciences, 2018 This paper analyzes the influence of laser linewidth on the measurement accuracy of a frequency-scanning Brillouin optical time domain reflectometer (FS-BOTDR), allowing for both the width of Brillouin gain spectrum and the signal-to-noise ratio (SNR) of
Qing Bai +8 more
doaj +1 more source
The observation of photon echoes from evanescently coupled rare-earth ions in a planar waveguide
, 2015 We report the measurement of the inhomogeneous linewidth, homogeneous linewidth and spin state lifetime of Pr3+ ions in a novel waveguide architecture. The TeO2 slab waveguide deposited on a bulk Pr3+:Y2SiO5 crystal allows the 3H4 - 1D2 transition of Pr3+
Bartholomew, John G. +4 more
core +1 more source
Semiconductor quantum dot lasers epitaxially grown on silicon with low linewidth enhancement factor
Applied Physics Letters, 2018 This work reports on the ultra-low linewidth enhancement factor (αH-factor) of semiconductor quantum dot lasers epitaxially grown on silicon. Owing to the low density of threading dislocations and resultant high gain, an αH value of 0.13 that is rather ...
J. Duan +6 more
semanticscholar +1 more source
AIP Advances, 2017 We report the frequency dependence of the ferromagnetic resonance linewidth of the free layer in magnetic tunnel junctions with all perpendicular–to–the–plane magnetized layers.
D. B. Gopman +9 more
doaj +1 more source
Narrow-Linewidth Semiconductor Laser with Hybrid Feedback
PhotonicsNarrow-linewidth semiconductor lasers have become indispensable devices in high-precision measurement and detection. Among various available technologies, self-injection locking plays a crucial role due to its significant ability to reduce linewidth and ...
Mingyuan Xue +6 more
doaj +1 more source
Ferromagnetic resonance linewidth and two-magnon scattering in Fe1-xGdx thin films
AIP Advances, 2017 Magnetization dynamics of Fe1-xGdx thin films (0 ≤ x ≤ 22%) has been investigated by ferromagnetic resonance (FMR). Out-of-plane magnetic field orientation dependence of resonance field and linewidth has been measured.
Sheng Jiang +6 more
doaj +1 more source
Observation of modified radiative properties of cold atoms in vacuum near a dielectric surface
, 2004 We have observed a distance-dependent absorption linewidth of cold $^{87}$Rb atoms close to a dielectric-vacuum interface. This is the first observation of modified radiative properties in vacuum near a dielectric surface.
Chevrollier M +14 more
core +1 more source
IEEE Photonics Journal, 2017 Laser phase noise tolerance in direct detection optical orthogonal frequency division multiplexing (OFDM) transmission system is experimentally demonstrated using laser linewidth emulator.
Y. N. Ali, Z. Zan
doaj +1 more source
Spin correlations and Dzyaloshinskii-Moriya interaction in Cs$_2$CuCl$_4$
, 2013 We report on electron spin resonance (ESR) studies of the spin relaxation in Cs$_2$CuCl$_4$. The main source of the ESR linewidth at temperatures $T \leq 150$ K is attributed to the uniform Dzyaloshinskii-Moriya interaction.
Assmus, W. +9 more
core +1 more source
Physical Review Applied, 2018 The excitonic homogeneous linewidth of an exfoliated monolayer MoSe$_2$ encapsulated in hexagonal boron nitride is directly measured using multidimensional coherent spectroscopy with micron spatial resolution.
Eric W. Martin +6 more
semanticscholar +1 more source