Search Results - Qirong Xiao
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Largely Tunable Terahertz Circular Polarization Splitters Based on Patterned Graphene Nanoantenna Arrays
Published 2019-01-01Get full textDynamic manipulation of wavefront is vital for massive free-space optical applications. Here we propose a set of largely tunable circular polarization splitters leveraging graphene nanoantennas with high efficiency reaching 83% and wide frequency tunability range of 2 to 5 THz. By synergi...
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Waveguide Engineering of Graphene Optoelectronics—Modulators and Polarizers
Published 2018-01-01Get full textThe concept of incorporating graphene into nanophotonic waveguides has pullulated into massive broadband optoelectronic applications with compact footprint. We theoretically demonstrate that by solely altering the dimension design of graphene-laminated silicon waveguides, the phase, amplitude, and p...
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Beam Transmission Properties in High Power Ytterbium-Doped Tandem-Pumping Fiber Amplifier
Published 2019-01-01Get full textThis paper presented beam evolution in entire fiber laser from a more qualitative perspective. Specifically, the beam transmission properties under the condition of the disturbances of the refraction index, during the full length of active fiber in tandem pumping fiber amplifier were shown. The refr...
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Second-harmonic generation within a random fiber laser
Published 2025-01-01Get full textOptical fibers offer convenient access to a variety of nonlinear phenomena. However, due to their inversion symmetry, second-order nonlinear effects, such as second-harmonic generation (SHG), are challenging to achieve. Here, all-fiber in-core SHG with high beam quality is achieved in a random fiber...
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