Seminar: “New Type of Cladding-Pumped Fibers for Next Generation of Monolithic Power-Scalable Fiber Laser Technologies”, Dr. Igor Voitenko CREOL 102 Thursday, September 23, 2010 / 10:30-11:30am
Dr. Igor Voitenko
A new approach to acquire an enhanced performance of fiber laser based on polarization maintaining Bisectional Core Fiber will be proposed. The next technical aspects will be discussed:
1. The properties and most attractive features of polarization maintaining Bisectional Core Fiber (BCF) having a large mode field area in which the strong phase-matching of propagating LP01 modes occurs when the LP01 mode becomes phase matched with the LP11 mode at specific wavelength.
2. The topology and design parameters of High Power Pump Coupler (HPPC) and power-scalable laser technologies with the coherent combining of laser beams.
3. Mitigation of Stimulated Brillouin scattering (SBS) in optical fibers through a control of acoustic modal properties of cladding/core interface where the acoustic mode has a cutoff at the layer between the core and inner cladding of fiber.
4. The scheme of generator producing an acoustic gradient along the core-cladding interface of fiber preventing the overlapping of the optical and acoustic fields in the fiber laser and suppressing the SBS.
5. The effectiveness of the offered methodology will be verified by theoretical and experimental data. The fragments of “visualization”
with the suppression of induced by longitudinal acoustic waves waveguide layer in the inner cladding of fiber will be demonstrated using the 1D-to-3D-FDTD simulations in MATLAB code.
6. The other scientific interests and most attractive results corresponding to design of Air Plasma applicator and design parameters of electrically-small antenna embedded into metamaterial shell will be briefly summarized in the conclusion.
Igor G. Voitenko earned his Ph.D. in Optics in 1982 from Moscow State University, Russia, and his post-doctoral degree D.Sc. (Doctor of Physical and Mathematical Sciences, Optics & Spectroscopy) in 2000 from Institute of Physics, National Academy of Sciences of Belarus, Minsk. He stayed at Institute of Applied Optics, Academy of Sciences of Belarus, in position of Chief Scientist until May 2001. Dr. Voitenko moved to the US in 2001 where he joined Haleos Inc., Blacksburg, Virginia, in position of Senior Scientist. In 2005 he joined the faculty at North Carolina State University, Raleigh, NC. He has more than 130 publications in scientific journals and holds 17 patents (Russian). His current research interests are focused on the development of new generation of fiber lasers, plasma ashing tools, and enhancement of small antenna performance with metamaterial.
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Martin C. Richardson