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End-pumped Nd:YVO4 laser with reduced thermal lensing via the use of a ring-shaped pump beam
10.1364/OL.42.002910 2017-07-20 A simple approach for alleviating thermal lensing in end-pumped solid-state lasers using a pump beam with a ring-shaped intensity distribution to decrease the radial temperature gradient is described. This scheme has been implemented in a diode-end-pumped Nd:... |
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Mid-infrared beam splitter for ultrashort pulses
10.1364/OL.42.002918 2017-07-20 A design is presented for a beam splitter suitable for ultrashort pulses in the mid-infrared and terahertz spectral range consisting of a structured metal layer on a diamond substrate. Both the theory and experiment show that this beam splitter does not disto... |
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Piston alignment for a segmented-aperture imaging system by using piston-sweep phasing
10.1364/OL.42.002922 2017-07-20 This Letter presents a novel method for aligning the piston settings for a segmented-aperture imaging system. By sweeping the piston setting for a reference segment, a stack of images can be acquired that encodes information about the relative piston alignmen... |
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Controllable single-photon nonreciprocal propagation between two waveguides chirally coupled to a quantum emitter
10.1364/OL.42.002914 2017-07-20 We investigate coherent controlling single-photon nonreciprocal propagation in a pair of waveguides chirally coupled to an atom by using a classical optical field. The results show that for a nonresonant photon, the perfect single-photon nonreciprocal propaga... |
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Anomalous dispersion engineering of co-sputtering Ag-AZO hybrids for antireflection coatings
10.1364/OL.42.002894 2017-07-19 Conventional antireflection coatings (ARCs), including single- and multi-layer, bionic micro/nano, and gradient-index structures, often do not take anomalous dispersive materials into account, but normal dispersion and Rayleigh configuration, known as a step-... |
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Generation of a coherent light beam with precise and fast dynamic control of the state and degree of polarization
10.1364/OL.42.002898 2017-07-19 Recent developments of polarized light sources with tunable state and degree of polarization (SOP and DOP) inherently provide a temporally incoherent beam, which makes them unsuitable for applications like interferometry. We present a method for generating a ... |
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Nonlinear spectrum broadening cancellation by sinusoidal phase modulation
10.1364/OL.42.002902 2017-07-19 We propose and experimentally demonstrate a new approach to dramatically reduce the spectral broadening induced by self-phase modulation occurring in a Kerr medium. By using a temporal sinusoidal phase modulation, we efficiently cancel to a large extent the c... |
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Chimera-like states in an array of coupled-waveguide resonators
10.1364/OL.42.002906 2017-07-19 We consider coupled-waveguide resonators subject to optical injection. The dynamics of this simple device are described by the discrete Lugiato–Lefever equation. We show that chimera-like states can be stabilized, thanks to the discrete nature of the coupled-... |
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High power, high repetition rate, tunable broadband mid-IR source based on single-pass optical parametric generation of a femtosecond laser
10.1364/OL.42.002886 2017-07-18 We report on single-pass optical parametric generation for high power, high repetition rate (RR), ultrafast broadband optical radiation in the mid-IR. Taking advantage of broad phase-matching bandwidth (BW) of the crystals for the interacting waves having zer... |
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Interaction between graphene-coated nanowires revisited with transformation optics
10.1364/OL.42.002890 2017-07-18 The interaction between graphene-coated nanostructures provides interesting optical properties not found in isolated graphene plasmonic structures. However, full-analytical solutions, which can provide deep physical insights underlying the hybrid graphene pla... |