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Ahmet E Akosman

Explore the profile of Ahmet E Akosman including associated specialties, affiliations and a list of published articles. Areas
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Citations 50
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Recent Articles
1.
Ordu M, Akosman A
Opt Lett . 2022 Jun; 47(12):3039-3042. PMID: 35709044
Nested negative curvature hollow-core fibers (NCFs) represent state-of-art optical guidance in the near-infrared (near-IR) region. In this Letter, we propose a unique design approach for these types of fibers in...
2.
Zeng J, Akosman A, Sander M
Opt Express . 2018 Nov; 26(19):24687-24694. PMID: 30469581
GHz high repetition rate compact sources with femtosecond pulse durations and stable performance can enable a wide range of applications. In this paper, several high repetition rate ultrafast thulium fiber...
3.
Akosman A, Sander M
Sci Rep . 2018 Sep; 8(1):13385. PMID: 30190582
Pathways towards the generation of extreme optical pulsation in a chaotic transition regime in a linear fibre laser cavity configuration are presented. In a thulium mode-locked fibre laser, extreme events...
4.
Akosman A, Sander M
Opt Express . 2017 Oct; 25(16):18592-18602. PMID: 29041057
Ultra-high precision dual-comb spectroscopy traditionally requires two mode-locked, fully stabilized lasers with complex feedback electronics. We present a novel mode-locked operation regime in a thulium-holmium co-doped fiber laser, a frequency-halved...
5.
Mutlu M, Akosman A, Kurt G, Gokkavas M, Ozbay E
Opt Express . 2012 Dec; 20(25):27966-73. PMID: 23262743
Fabrication and experimental characterization of a broadband quarter-wave plate, which is based on two-dimensional and binary silicon high-contrast gratings, are reported. The quarter-wave plate feature is achieved by the utilization...
6.
Mutlu M, Akosman A, Serebryannikov A, Ozbay E
Phys Rev Lett . 2012 Sep; 108(21):213905. PMID: 23003256
An asymmetric, reciprocal, diffraction-free transmission of linearly polarized waves in a new diodelike, three-layer, ultrathin, chiral structure is studied theoretically and experimentally. The exploited physical mechanism is based on the...
7.
Mutlu M, Akosman A, Ozbay E
Opt Lett . 2012 Jun; 37(11):2094-6. PMID: 22660132
A circular polarizer, which is composed of periodic and two-dimensional dielectric high-contrast gratings, is designed theoretically such that a unity conversion efficiency is achieved at λ(0)=1.55 μm. The operation is...
8.
Akosman A, Mutlu M, Kurt H, Ozbay E
Opt Express . 2011 Nov; 19(24):24129-38. PMID: 22109439
We demonstrate the operation of a compact wavelength de-multiplexer using cascaded single-mode photonic crystal waveguides utilizing the slow light regime. By altering the dielectric filling factors of each waveguide segment,...
9.
Mutlu M, Akosman A, Serebryannikov A, Ozbay E
Opt Express . 2011 Sep; 19(15):14290-9. PMID: 21934793
An electrically thin chiral metamaterial structure composed of four U-shaped split ring resonator pairs is utilized in order to realize polarization rotation that is dependent on the polarization of the...
10.
Mutlu M, Akosman A, Serebryannikov A, Ozbay E
Opt Lett . 2011 May; 36(9):1653-5. PMID: 21540958
An asymmetric chiral metamaterial structure is constructed by using four double-layered U-shaped split ring resonators, which are each rotated by 90° with respect to their neighbors. The peculiarity of the...