1,721,139 research outputs found
New opportunities for sensing using microstructured optical fibres
No full textRecently a new class of optical fibre has emerged: the microstructured fibre. One example is the holey fibre (HF), which has a cladding region defined by air holes (see Figure 1). Light is guided in a HF due to the effective refractive index contrast between the solid core and the holey cladding. This contrast is typically a strong function of wavelength, and this leads to a host of novel optical properties. [1,2] Microstructured, fibres offer new alternatives for sensing, and they can be divided into two categories: those which use the holes directly, and those which exploit their unusual optical properties
Dose–response of initial G2-chromatid breaks induced in normal human fibroblasts by heavy ions
No full textAssorted core air-clad fibre
No full textAn optical fibre containing a selection of,independently addressable air-clad cores with different dimensions is presented. The intrinsic properties of such an assorted core fibre are studied and potential applications are reviewed The physical dimensions required for guidance at various wavelengths are explored
Nonlinear tapered holey fibers with high stimulated Brillouin scattering threshold and controlled dispersion
No full textWe numerically calculate optical property maps for hexagonally arranged nonlinear holey fibers made of silica, lead silicate, and bismuth oxide-based glass and employ them to design tapered fibers with enhanced stimulated Brillouin scattering threshold and a simultaneous control of the average dispersion
1.2 mJ, 37 ns single-moded pulses at 10 kHz repetition rate from a Q-switched ytterbium fiber laser
No full textWe have demonstrated a diode pumped 1.2mJ, 37ns Q-switched laser with good mode quality, operating at ~1075nm with a repetition rate of 10kHz, utilizing a ytterbium doped LMA fiber
Holey fibers: new possibilities for guiding and manipulating light
No full textThe wavelength-scale features in holey fibers lead to novel properties including endlessly single-mode guidance and anomalous dispersion below 1.3µm. Fundamental concepts and recent progress are reviewed, ranging from fabrication and modelling to devices and applications
High-power, high-brightness, mJ Q-switched ytterbium-doped fibre laser
No full textA simple diode-pumped, Q-switched fibre laser is reported based on large mode area ytterbium-doped fibre capable of producing pulses with a high beam quality (M2=1.1), a duration of ~40 ns and energies as high as 1.2 mJ at a repetition rate of 10 kHz. This combination of desirable beam qualities makes the source attractive for a range of industrial applications currently serviced by conventional bulk crystal/glass based Q-switched laser systems
Holey fibers: new opportunities for manipulating light
No full textThe wavelength-scale features in holey fibers lead to novel properties including endlessly single-mode guidance, high optical nonlinearity per unit length, and anomalous dispersion below 1.3µm
Holey fibres: fundamentals and applications
No full textThe wavelength-scale features in holey fibers lead to novel properties including endlessly single-mode guidance and anomalous dispersion below 1.3µm. Fundamentals and recent progress are reviewed, ranging from fabrication and modelling to devices and applications
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