Zobrazeno 1 - 10
of 908
pro vyhledávání: '"Bache M"'
Autor:
Zhou, B., Liu, X., Guo, H. R., Zeng, X. L., Chen, X. F., Chung, H. P., Chen, Y. H., Bache, M.
Publikováno v:
Phys. Rev. Lett. 118, 143901 (2017)
We show that a temporal soliton can induce resonant radiation by three-wave mixing nonlinearities. This constitutes a new class of resonant radiation whose spectral positions are parametrically tunable. The experimental verification is done in a peri
Externí odkaz:
http://arxiv.org/abs/1606.00572
Publikováno v:
Opt. Express 23, 6924-6936 (2015)
Generating energetic femtosecond mid-IR pulses is crucial for ultrafast spectroscopy, and currently relies on parametric processes that, while efficient, are also complex. Here we experimentally show a simple alternative that uses a single pump wavel
Externí odkaz:
http://arxiv.org/abs/1409.6482
Publikováno v:
Optical Materials Express 3, 1647-1657 (2013)
We discuss a novel method for generating octave-spanning supercontinua and few-cycle pulses in the important mid-IR wavelength range. The technique relies on strongly phase-mismatched cascaded second-harmonic generation (SHG) in mid-IR nonlinear freq
Externí odkaz:
http://arxiv.org/abs/1306.4097
Publikováno v:
Physical Review Letters 109, 043902 (2012)
Cascaded nonlinearities have attracted much interest, but ultrafast applications have been seriously hampered by the simultaneous requirements of being near phase-matching and having ultrafast femtosecond response times. Here we show that in strongly
Externí odkaz:
http://arxiv.org/abs/1109.4261
Publikováno v:
Opt. Express 19, 22557-22562 (2011)
When ultrafast noncritical cascaded second-harmonic generation of energetic femtosecond pulses occur in a bulk lithium niobate crystal optical Cherenkov waves are formed in the near- to mid-IR. Numerical simulations show that the few-cycle solitons r
Externí odkaz:
http://arxiv.org/abs/1109.0376
Autor:
Bache, M.
Publikováno v:
Journal of the Optical Society of America B, 26 460-470 (2009)
The dispersion of index-guiding microstructured polymer optical fibers is calculated for second-harmonic generation. The quadratic nonlinearity is assumed to come from poling of the polymer, which in this study is chosen to be the cyclic olefin copol
Externí odkaz:
http://arxiv.org/abs/0811.0143
Publikováno v:
Optics Express, Vol. 16, Issue 5, pp. 3273-3287 (2008), http://www.opticsexpress.org/abstract.cfm?id=154644
We study cascaded quadratic soliton compressors and address the physical mechanisms that limit the compression. A nonlocal model is derived, and the nonlocal response is shown to have an additional oscillatory component in the nonstationary regime wh
Externí odkaz:
http://arxiv.org/abs/0801.0707
Publikováno v:
Opt. Lett. 32, 2490-2492 (2007), http://www.opticsinfobase.org.globalproxy.cvt.dk/abstract.cfm?URI=ol-32-17-2490
We study soliton pulse compression in materials with cascaded quadratic nonlinearities, and show that the group-velocity mismatch creates two different temporally nonlocal regimes. They correspond to what is known as the stationary and nonstationary
Externí odkaz:
http://arxiv.org/abs/0706.1933
Publikováno v:
Journal of the Optical Society of America B 24, 2752-2762 (2007)
We present a detailed study of soliton compression of ultra-short pulses based on phase-mismatched second-harmonic generation (\textit{i.e.}, the cascaded quadratic nonlinearity) in bulk quadratic nonlinear media. The single-cycle propagation equatio
Externí odkaz:
http://arxiv.org/abs/0706.1507
Publikováno v:
Phys. Rev. A 73, 053802 (2006)
By using the ghost imaging technique, we experimentally demonstrate the reconstruction of the diffraction pattern of a {\em pure phase} object by using the classical correlation of incoherent thermal light split on a beam splitter. The results once a
Externí odkaz:
http://arxiv.org/abs/quant-ph/0604043