Dr. Marcin Franczyk Profile

Dr. Marcin Franczyk

Researcher at Institute of Electronic Materials Technology

SPIE Involvement:

Author

Publications (7)

PROCEEDINGS ARTICLE | May 23, 2018

Nanostructured core single mode phosphate fiber laser with high slope efficiency (Conference Presentation)

Proc. SPIE. 10681, Micro-Structured and Specialty Optical Fibres V

KEYWORDS: Glasses, Fiber lasers, Refractive index, Nanostructuring, Cladding, Lenses, Nanostructures, Structured optical fibers, Manufacturing, Optical properties

Read Abstract

The nanostructurization of fiber core is a new method to modify optical properties of the fiber using standard stack-and-draw fiber manufacturing technology. This method allows to design and develop large mode area single mode active fibers using optimized gradient refractive index profiles by means of nano-structure composed of two or more types of glass. The distribution of discrete glass areas with feature size smaller than λ/5 results in continuous-like refractive index profiles. The nanostructurization has been successfully used by our group for development of microoptical components like single parabolic or axicon lenses, an array of lenses, recently applied as Shack-Hartmann sensor, or nonlinear components like vortex. We also used that method for developing passive optical fibers. In this paper we present studies on the novel fiber for laser application with nanostructure core of uniform refractive index distribution. The fiber core consisted of two phosphate glasses, one glass undoped and the other glass doped with ytterbium, with percentage content of 57/43 respectively. They were matched with rheological properties, but differed with refractive indices of Δn = 0.001. We calculated the binary pattern composed of two types of nanorods which corresponded to uniform refractive index distribution. The average refractive index value was precisely selected to support single-mode operation in the fiber structure. If you used only doped glass in the standard fiber with similar dimensions you would obtain multimode fiber. The same undoped glass used in nanostructure core was also used for the cladding around the fiber core. For the fiber development we used doped phosphate glass with Yb2O3 concentration of 6 mol% (15.69×1020 Yb3+ cm-3) with the peak emission cross section of 1.45×10-20 cm2 and the luminescence lifetime of the Yb3+ ions of 0.6 ms. The final fiber was manufactured with double-clad structure. The nanostructured core was 19 µm, and the internal cladding was 59 µm in diameter. The overall diameter of the fiber was 241 µm. The external cladding was created as an air-cladding with high numerical aperture suitable for efficient pumping. We put that fiber into the laser setup and for the fiber length of 15 cm we achieved 63 % of slope efficiency in relation to the launched power, which is comparable to our lately reported achievements. The maximum output power was 10.3 W and the threshold was 3 W. The output was single-mode with very good quality with numerical aperture of about 0.04. The spectrum of the laser wavelength was 18 nm (1012-1030 nm) without implementation of any diffraction elements. The nanostructurization method allows to break the limits of classical manufacturing methods and opens new opportunities in precise shaping of the refractive index distribution, providing the development possibility of many theoretical studies. We believe that new approach may also lead to develop all-solid very large mode area active fibers and it can be easily applied to silica technology. This work was supported by the project TEAM TECH /2016-1/1 operated within the Foundation for Polish Science Team Programme co-financed by the European Regional Development Fund under Smart Growth Operational Programme (SG OP), Priority Axis IV

PROCEEDINGS ARTICLE | November 20, 2008

Ytterbium doped phosphate glass air-clad photonic crystal fiber for laser applications

Proc. SPIE. 7141, 16th Polish-Slovak-Czech Optical Conference on Wave and Quantum Aspects of Contemporary Optics

KEYWORDS: Glasses, Fiber lasers, Ytterbium, Photonic crystal fibers, Cladding, Diodes, Waveguides, Laser applications, Laser crystals, Bridges

Read Abstract

PROCEEDINGS ARTICLE | April 9, 2007

Double-clad photonic crystal fibre for laser applications

Proc. SPIE. 6608, Lightguides and Their Applications III

KEYWORDS: Glasses, Ytterbium, Doping, Photonic crystal fibers, Structured optical fibers, Laser applications, Luminescence, Bridges, Manufacturing, Fiber lasers

Read Abstract

PROCEEDINGS ARTICLE | October 12, 2005

Highly birefringent photonic crystal fibers with elliptical holes

Proc. SPIE. 5950, Photonic Crystals and Fibers

KEYWORDS: Birefringence, Glasses, Structured optical fibers, Photonic crystal fibers, Cladding, Refractive index, Polarization, Anisotropy, Scanning electron microscopy, Numerical analysis

Read Abstract

PROCEEDINGS ARTICLE | September 23, 2005

Multicomponent glass fiber optic integrated structures

Proc. SPIE. 5951, Optical Fibers: Technology

KEYWORDS: Glasses, Photonic crystal fibers, Manufacturing, Fiber optics, Structured optical fibers, Capillaries, Waveguides, Refractive index, Optics manufacturing, Cladding

Read Abstract

PROCEEDINGS ARTICLE | September 8, 2004

Birefringent photonic crystal fiber with square lattice

Proc. SPIE. 5576, Lightguides and their Applications II

KEYWORDS: Optical fibers, Polarization, Birefringence, Photonic crystal fibers, Solids, Silica, Capillaries, Near field, Near field optics, Refractive index

Read Abstract

Showing 5 of 7 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years