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Optical frequency combs in space bear the prospect of dramatically improving satellite navigation and they may pave the pathway for various space applications like satellite formation flights, global satellite navigation, earth observation, and satellite-based fundamental tests of physical constants [1]. Here we report on a precision ranging system based on a dual-comb architecture aiming for fast...
Neutral atoms trapped inside an optical cavity provide an ideal platform for the implementation of quantum networks [1]. In such a network, nodes containing multiple atomic qubits are essential for the construction of a quantum repeater as they allow for entanglement swapping and thus the generation of entanglement between qubits over long distances. Here we will show the realisation of such a multi-qubit...
Complete control of individual atoms trapped in far-off resonance optical tweezers is vital for gaining a better understanding of the microscopic world. It will provide a platform with unprecedented flexibility for studying few-body physics, and might lead to new quantum technologies.
Optical rectification of ultrashort laser pulses in electro-optic crystals is an established technique of terahertz generation. In this technique, the pump optical pulse produces a nonlinear polarization that moves with the group velocity of the optical pulse and acts as a source of terahertz radiation. The up-to-date generation schemes based on this principle utilize both the standard collinear phase...
Novel nonlinear optical crystals have attracted considerable interests due to their wide applications in frequency shifting, terahertz generation, optical communications, display, sensing, and so on. Because terahertz radiation is sensitive to free carriers and lattice vibrations in solid states, terahertz time-domain spectroscopy (THz-TDS) has become a pivotal tool in investigating fundamental dynamics...
The nonlinear light-matter interaction lies at the heart of controlling the electronic systems for the purpose of developing ultrafast optical switching and modulation devices [1], and attosecond laser technology [2]. In general, the interaction causes the formation of photon dressed state that is a quantum superposition state with energetically spaced sidebands and enables to generate the phase-locked...
The need for microoptical elements in various emerging fields such as astrophotonics, nonlinear optics and biomedicine create a demand for a new generation optics that would be lightweight/compact, resilient to harsh environment and easily integrable in other devices. Ultrafast pulses based direct laser writing 3D nanolithography produced microlenses seem as one of the candidates for such applications...
For memory applications and optical control of qubits ultrafast manipulation and high coupling efficiencies are desirable. Ultrafast coherent control can be achieved by the off-resonant Raman scheme [1]. There exist several colour centres with an optically accessible lambda-type energy structure which offer a level splitting large enough for broadband laser pulses.
Spectral compression (SC) by self-phase modulation in optical fibre has been known for a long time and has since been reported for various parameters [1]. In this paper, we analyse the impact of amplitude fluctuations and a degraded optical signal-to-noise ratio (OSNR) of the seed pulses on the SC process by means of extensive nonlinear Schrödinger equation numerical simulation. Remarkably, our results...
Switching of light between temporal and spatial domains have a range of applications from telecommunications to coherent pulse combining. For instance, in laser applications in manufacturing and high-definition design of complex properties in materials, the surface of the treated metal product is exposed to a sequence of high-power optical pulses with certain period in time, where each pulse is focused...
Pulse burst generation has important applications in material processing [1], seeding of free electron lasers [2] and coherent pulse stacking [3]. In particular, coherent pulse stacking technique allows further scaling of fiber and solid-state amplifiers by splitting the seed pulse into multiple replicas and stacking them into a single dominant pulse after the amplification. For this task, a pulse...
The continued remarkable advances in optical clocks and oscillators has led to a parallel strong development of optical clock networks [1]. Such networks have the potential to support a wide range of applications from basic time/frequency dissemination, to clock-based geodesy, to tests of general relativity [1]. To support optical clocks/oscillators at their highest accuracy and precision, these networks...
Exposure of silica glass to focused femtosecond laser radiation produces a variety of structural modifications [1] that are accompanied by a localized change in volume [2, 3]. This volume change can be used to apply displacements in a controlled manner, allowing the generation of intense, localized stress fields [4] whose magnitude, orientation, and shape are easily manipulated through tuning of the...
Probability distribution functions (PDF) with a tail longer than eight standard deviations are reflecting the presence of extreme processes in the system. Recently, we have shown that the cases of observation L-PDF need to be separated into two classes: the predictable events with L-PDF (PL-PDF) and the unpredictable (UL-PDF) ones. Also, it was observed that the case of oscillation system with seven...
Fibers are considered as extraordinary tabletop laboratories to investigate optical turbulence and optical rogue waves (ORW). However ultrafast measurement of random optical power fluctuations is a challenging experimental task and the typical sub-picosecond timescale prevented-up to now-time-resolved observations of the awaited dynamics. We report the first single-shot recordings of ORW emerging...
Water dam breaking (or dam failure) triggered by the nature disasters such as earthquakes or heavy rainfall can cause huge damage in terms of human lives and properties. Not only for realizing its formation process to evaluate the potential consequences, but also because of the intrinsic rich mathematical and numerical interest, this classical problem has attracted a lot of attention [1-3]. However,...
Due to a strong light absorption by metals, it is believed that plasmonic nanostructures cannot be used for generating intensive radiation harmonics in the UV spectral range. We present results of investigation of the nonlinear optical interaction of laser radiation with a single gold nanostructure in the geometry of the Split-Hole Resonator (SHR) [1, 2] under the-state-of-the-art experimental realized...
Although shaping of fields around nanostructures is widely studied in plasmonics, the influence of the field inside the nanostructures is often overlooked. The linear field distribution inside the structure taken to the third power causes third-harmonic generation, a nonlinear optical response of matter. We demonstrate how this simple fact can be used to shape complex fields around a single particle...
Nonlinear optical microresonators driven by continuous-wave (CW) lasers have enabled a variety of novel applications and phenomena including the generation of optical frequency combs [1], [2]. Particularly the formation of femtosecond temporal dissipative Kerr-cavity soliton pulses [3], [4] has recently attracted significant attention as it enables the generation of ultra-short optical pulse as well...
Dissipative Kerr-cavity temporal Solitons (DKS) are self-localized light pulses that can be excited in coherently-driven nonlinear optical resonators [1], enabling compact, coherent optical Kerr Frequency Combs (KFC) generation, which have numerous potential applications. Numerical studies based on the Lugiato-Lefever Equation (LLE) predicted that DKS can undergo breathing, i.e. periodic variations...
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