Supercontinuum optical vortex pulse generation without spatial or topological-charge dispersion
نویسندگان
چکیده
منابع مشابه
Supercontinuum Generation In Optical Fibres
In this work, a high power Ytterbium pump laser was used in a quasicontinuous wave (CW) pump scheme to generate supercontinua in two different optical fibres, a depressed cladding, graded index highly nonlinear fibre (HNLF), and a solid core photonic crystal fibre (PCF). Pumping a 300 m length of the HNLF with a peak pump power of 140 W, a continuum with a spectral flatness of 5 dB over 1000 nm...
متن کاملSupercontinuum generation with optical vortices.
We employ an optical vortex beam for the generation of femtosecond supercontinuum in a solid state medium. We demonstrate that the continuum generation process is initiated by the filamentation of the vortex, resulting in a spatially divergent continuum. Despite the strong self-focusing and the formation of multiple hot-spots along the vortex ring, the singularity is preserved in both the near-...
متن کاملUltrashort optical-vortex pulse generation in few-cycle regime.
We generated a 2.3-cycle, 5.9-fs, 56-μJ ultrashort optical-vortex pulse (ranging from ~650 to ~950 nm) in few-cycle regime, by optical parametric amplification. It was performed even by using passive elements (a pair of prisms and chirped mirrors) for chirp compensation. Spectrally-resolved interferograms and intensity profiles showed that the obtained pulses have no spatial or topological-char...
متن کاملDynamics of Raman soliton during supercontinuum generation near the zero-dispersion wavelength of optical fibers.
We observe unique dynamics of Raman soliton during supercontinuum process when an input pulse experiences initially normal group-velocity dispersion with a negative dispersion slope. In this situation, the blue components of the spectrum form a Raman soliton that moves faster than the input pulse and eventually decelerates because of Raman-induced frequency downshifting. In the time domain, the...
متن کاملLimits of coherent supercontinuum generation in normal dispersion fibers
We study the largely unexplored transition between coherent and noise-seeded incoherent continuum generation in all-normal dispersion (ANDi) fibers and show that highly coherent supercontinua with spectral bandwidths of one octave can be generated with long pump pulses of up to 1.5 ps duration, corresponding to soliton orders of up to N 600. In terms of N , this corresponds to an approximately ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2009
ISSN: 1094-4087
DOI: 10.1364/oe.17.014517