نتایج جستجو برای: double clad fibers

تعداد نتایج: 311116  

Journal: :Brazilian oral research 2009
Alfredo de Aquino Gaspar Junior Manuela Wanderley Ferreira Lopes Gabriela da Silveira Gaspar Rodivan Braz

The objective of this study was to compare the flexural strength and elasticity modulus of two types of staple reinforcement fibers, Interlig - Angelus/glass (Londrina, PR, Brazil) and Connect - KerrLab(R)/polyethylene (MFG Co., West Collins Orange, CA, USA), which are widely used in Dentistry for chairside use, after varying the number of layers employed and submitting or not to thermocycling....

2001
Maksim Skorobogatiy Mihai Ibanescu Steven G. Johnson Ori Weisberg Torkel D. Engeness Marin Soljačić Steven A. Jacobs Yoel Fink

We develop a novel perturbation theory formulation to evaluate polarization-mode dispersion (PMD) for a general class of scaling perturbations of a waveguide profile based on generalized Hermitian Hamiltonian formulation of Maxwell’s equations. Such perturbations include elipticity and uniform scaling of a fiber cross section, as well as changes in the horizontal or vertical sizes of a planar w...

Journal: :Journal of biomedical optics 2014
Claire Lefort Hussein Hamzeh Frederic Louradour Frédéric Pain Darine Abi Haidar

Several endomicroscope prototypes for nonlinear optical imaging were developed in the last decade for in situ analysis of tissue with cellular resolution by using short infrared light pulses. Fourier-transform-limited pulses at the tissue site are necessary for optimal excitation of faint endogenous signals. However, obtaining these transform-limited short pulses remains a challenge, and previo...

Journal: :Optics Express 2021

We present a bi-directionally 793-nm diode-pumped Tm 3+ , Ho -codoped silica polarization maintaining double-clad all-fiber laser based on single-oscillator architecture emitting 195 W at 2.09 µm in continuous wave mode of operation, with beam quality near the diffraction limit (M 2 = 1.08). The power scaling is only pump-power-limited range total available pump (540 W).

Journal: :Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan 1964

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