Journal ArticleDOI
Spectral shaping of supercontinuum in a cobweb photonic-crystal fiber with sub-20-fs pulses
Alexander Apolonski,Boris Povazay,Angelika Unterhuber,Wolfgang Drexler,William J. Wadsworth,Jonathan Knight,Phillip St. J. Russell +6 more
Reads0
Chats0
TLDR
In this article, a smooth, powerful, and stable supercontinuum in cobweb photonic-crystal fibers was generated by using 18-fs pulses with various chirp, power, and polarization states.Abstract:
Multiple approaches to generate a smooth, powerful, and stable supercontinuum in cobweb photonic-crystal fibers were undertaken by use of 18-fs pulses. These approaches include utilization of incident pulses with various chirp, power, and polarization states, as well as fibers with different lengths and core sizes. For long fibers (tens of centimeters) the supercontinuum contains a finely modulated structure that can be smoothed when the oscillator is in a regime of relaxation oscillations. Short fibers provide a supercontinuum free of gaps. By optimization of these parameters supercontinua exceeding one octave with modulations of less than 10 dB have been generated.read more
Citations
More filters
Journal ArticleDOI
Supercontinuum generation in photonic crystal fiber
TL;DR: In this paper, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
Journal ArticleDOI
Optical coherence tomography - principles and applications
TL;DR: OCT as discussed by the authors synthesises cross-sectional images from a series of laterally adjacent depth-scans, which can be used to assess tissue and cell function and morphology in situ.
Journal ArticleDOI
Ultrahigh Resolution Optical Coherence Tomography
TL;DR: The rapid development of ultrabroad bandwidth light sources has recently enabled a significant improvement in OCT imaging resolution, demonstrating the potential of OCT to accomplish its original goal of performing noninvasive optical biopsies, i.e., the in vivo visualization of microstructural morphology in situ, which had previously only been possible with histopathology.
Journal ArticleDOI
Submicrometer axial resolution optical coherence tomography
Boris Povazay,Kostadinka Bizheva,Angelika Unterhuber,Boris Hermann,Harald Sattmann,Adolf Friedrich Fercher,Wolfgang Drexler,Alexander Apolonski,William J. Wadsworth,Jonathan Knight,P. St. J. Russell,M. Vetterlein,E. Scherzer +12 more
TL;DR: Submicrometer-resolution OCT is demonstrated in vitro on human colorectal adenocarcinoma cells HT-29, a novel light source that has great potential for development of spectroscopic OCT because its spectrum covers the absorption bands of several biological chromophores.
Supercontinuum generation, photonic crystal fiber
TL;DR: In this article, a review of numerical and experimental studies of supercontinuum generation in photonic crystal fiber is presented over the full range of experimentally reported parameters, from the femtosecond to the continuous-wave regime.
References
More filters
Journal ArticleDOI
Carrier-envelope phase control of femtosecond mode-locked lasers and direct optical frequency synthesis
David J. Jones,Scott A. Diddams,Jinendra Kumar Ranka,Andrew John Stentz,Robert S. Windeler,John L. Hall,Steven T. Cundiff +6 more
TL;DR: The carrier-envelope phase of the pulses emitted by a femtosecond mode-locked laser is stabilized by using the powerful tools of frequency-domain laser stabilization to perform absolute optical frequency measurements that were directly referenced to a stable microwave clock.
Journal ArticleDOI
Visible continuum generation in air–silica microstructure optical fibers with anomalous dispersion at 800 nm
TL;DR: In this article, the authors demonstrate experimentally that air-silica microstructure optical fibers can exhibit anomalous dispersion at visible wavelengths, and exploit this feature to generate an optical continuum 550 THz in width, extending from the violet to the infrared.
Journal ArticleDOI
Ultrahigh-resolution optical coherence tomography using continuum generation in an air-silica microstructure optical fiber.
Ingmar Hartl,Xingde Li,C. Chudoba,Ravi K. Ghanta,Tony H. Ko,James G. Fujimoto,Jinendra Kumar Ranka,Robert S. Windeler +7 more
TL;DR: Ultrahigh-resolution optical coherence tomography (OCT) using continuum generation in an air-silica microstructure fiber as a low-coherence light source and imaging in biological tissue in vivo was demonstrated.
Journal ArticleDOI
Highly birefringent photonic crystal fibers
A. Ortigosa-Blanch,Jonathan Knight,William J. Wadsworth,Jesús Arriaga,Brian Joseph Mangan,Tim A. Birks,P. St. J. Russell +6 more
TL;DR: Based on spectral measurements of the polarization mode beating, it is estimated that the strongly anisotropic photonic crystal fiber has a beat length of approximately 0.4 mm at a wavelength of 1540 nm, in good agreement with the results of modeling.
Journal ArticleDOI
Supercontinuum generation of higher-order solitons by fission in photonic crystal fibers.
Anton Husakou,Joachim Herrmann +1 more
TL;DR: The nonlinear pulse propagation in photonic crystal fibers without slowly varying envelope approximation is studied using an improved variant of first-order wave equation and good agreement with experimental observations is found.