Distinguishing the respective determining factors for spectral broadening and concentration quenching in multiple resonance type TADF emitter systems.
Sign Up to like & getrecommendations! Published in 2022 at "Materials horizons"
DOI: 10.1039/d2mh00511e
Abstract: Multiple resonance (MR) type thermally activated delayed fluorescence (TADF) emitters have attracted much recent attention due to their narrow emission spectra and high photoluminescence quantum yields (PLQYs). Spectral broadening and concentration quenching at high doping… read more here.
Keywords: concentration quenching; tadf; concentration; multiple resonance ... See more keywords
Investigation of crystal field effects for the spectral broadening of Yb3+-doped LuxY2−xO3 sesquioxide crystals
Sign Up to like & getrecommendations! Published in 2022 at "RSC Advances"
DOI: 10.1039/d2ra03639h
Abstract: The investigation of crystal field effects is significant for elucidating the spectral characteristics of Yb3+-doped sesquioxide crystals for ultrafast laser generation. The narrow spectra of Yb3+-doped single sesquioxide crystals limit the generation of ultrafast lasers;… read more here.
Keywords: sesquioxide crystals; yb3 doped; spectral broadening; crystal field ... See more keywords
Influence of pressure on spectral broadening of femtosecond laser pulses in air
Sign Up to like & getrecommendations! Published in 2021 at "Physics of Plasmas"
DOI: 10.1063/5.0042998
Abstract: Spectral broadening is an important nonlinear effect during the interaction of intense femtosecond laser pulses with air. In this paper, we experimentally study the dependence of spectral broadening on pressure and pulse energy. It is… read more here.
Keywords: air; spectral broadening; femtosecond laser; pressure ... See more keywords
Variation of electron density in spectral broadening process in solid thin plates at 400 nm
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Physics B"
DOI: 10.1088/1674-1056/abf0fe
Abstract: The generation of continuous spectrum centered at 400 nm from solid thin plates is demonstrated in this work. A continuum covering 365 nm to 445 nm is obtained when 125-μJ frequency-doubled Ti:sapphire laser pulses are… read more here.
Keywords: electron density; variation electron; spectral broadening; solid thin ... See more keywords
Temporal reflection as a spectral-broadening mechanism in dual-pumped dispersion-decreasing fibers and its connection to dispersive waves
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.95.033813
Abstract: We show that temporal reflections off a moving refractive index barrier play a major role in the spectral broadening of a dual-wavelength input inside a highly nonlinear, dispersion-decreasing fiber. We also find that a recently… read more here.
Keywords: reflection spectral; temporal reflections; spectral broadening; dispersion ... See more keywords
Origins of spectral broadening of incoherent waves: Catastrophic process of coherence degradation
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review A"
DOI: 10.1103/physreva.96.023817
Abstract: We revisit the mechanisms underlying the process of spectral broadening of incoherent optical waves propagating in nonlinear media on the basis of nonequilibrium thermodynamic considerations. A simple analysis reveals that a prerequisite for the existence… read more here.
Keywords: spectral broadening; process; origins spectral; catastrophic process ... See more keywords
A Comparative Analysis on Fully Integrated Spectral Broadening of Kerr Frequency Combs
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2746675
Abstract: Microresonator-based frequency combs have potential to achieve on-chip frequency metrology. To obtain high-power comb lines at f and 2f for self-referenced stabilization, we evaluate the feasibility of building a fully integrated comb generator with spectral… read more here.
Keywords: broadening kerr; fully integrated; frequency; frequency combs ... See more keywords
Studies of Spectral Broadening of the Lower Hybrid Wave Line in the Current-Drive Regimes and Ion Heating at the FT-2 Tokamak
Sign Up to like & getrecommendations! Published in 2021 at "Plasma Physics Reports"
DOI: 10.1134/s1063780x2104005x
Abstract: The experiments at the FT-2 tokamak are described that were focused on clearing up the role of the parametric decay instabilities in decreasing the generation efficiency of the non-inductive current excited by the electromagnetic waves… read more here.
Keywords: studies spectral; broadening lower; lower hybrid; current drive ... See more keywords
Nonlinear spectral broadening of a dual-carrier electro-optic frequency comb in a graphene oxide cladded silicon-rich nitride hybrid waveguide.
Sign Up to like & getrecommendations! Published in 2022 at "Applied optics"
DOI: 10.1364/ao.466219
Abstract: We demonstrate a detailed theoretical analysis describing the generation of an electro-optic comb (EOC) in the near-IR range through discrete phase and amplitude modulation driven by radio frequency (RF) signal generators. Furthermore, the generated EOC… read more here.
Keywords: electro optic; nonlinear spectral; frequency; comb ... See more keywords
Homogeneous spectral broadening of pulsed terahertz quantum cascade lasers by radio frequency modulation.
Sign Up to like & getrecommendations! Published in 2018 at "Optics express"
DOI: 10.1364/oe.26.000980
Abstract: The authors present an experimental investigation of radio frequency modulation on pulsed terahertz quantum cascade lasers (QCLs) emitting around 4.3 THz. The QCL chip used in this work is based on a resonant phonon design… read more here.
Keywords: double metal; radio frequency; spectral broadening; frequency modulation ... See more keywords
On the frequency spanning of SPM-enabled spectral broadening: analytical solutions.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.466033
Abstract: We present an analytical treatment of ultra-short pulses propagating in an optical fiber in the strong nonlinearity regime, in which the interaction between self-phase modulation (SPM) and group-velocity dispersion (GVD) substantially broadens the input spectrum.… read more here.
Keywords: spm; enabled spectral; analytical solutions; frequency spanning ... See more keywords