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Supercontinuum
About: Supercontinuum is a research topic. Over the lifetime, 7071 publications have been published within this topic receiving 127671 citations.
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TL;DR: The nanophotonic phased array is excited by a supercontinuum laser source for a wide range of beam steering for the first time to the best of the authors' knowledge and paves the way to tune the wavelength from visible to near infrared range for silicon nitride nanophOTonic phased arrays.
Abstract: In this Letter, the broadband operation in wavelengths from 520 nm to 980 nm is demonstrated on silicon nitride nanophotonic phased arrays. The widest beam steering angle of 65° on a silicon nitride phased array is achieved. The optical radiation efficiency of the main grating lobe in a broad wavelength range is measured and analyzed theoretically. The optical spots radiated from the phased array chip are studied at different wavelengths of lasers. The nanophotonic phased array is excited by a supercontinuum laser source for a wide range of beam steering for the first time to the best of our knowledge. It paves the way to tune the wavelength from visible to near infrared range for silicon nitride nanophotonic phased arrays.
42 citations
TL;DR: In the IR pulse filament the anomalous dispersion of fused silica leads to the formation of an isolated anti-Stokes wing (ASW), which is located in the visible region of the supercontinuum (SC).
Abstract: We have demonstrated that in the IR pulse filament the anomalous dispersion of fused silica leads to the formation of an isolated anti-Stokes wing (ASW), which is located in the visible region of the supercontinuum (SC). It is shown that the isolated ASW is formed by the interference of the light field of a SC undergoing anomalous group velocity dispersion.
42 citations
17 Jun 2005
TL;DR: In this article, the frequency dependence of the effective area can be conveniently included in NEE approaches to model pulse propagation in PCF through a modified optical shock term, showing an effective 100 nm reduction in the supercontinuum (SC) bandwidth due to the area frequency dependence.
Abstract: In this paper, we describe how the frequency-dependence of the effective area can be conveniently included in NEE approaches to model pulse propagation in PCF through a modified optical shock term We plot the supercontinuum (SC) characteristics expected for 6 kW peak power 100 fs duration input pulses at 1064 nm in 50 cm of PCF both neglecting and including the shock term correction, showing an effective 100 nm reduction in the SC bandwidth due to the effective area frequency-dependence It is concluded that the detailed continued study of SC generation in PCF for pumping far from the ZDW in the infrared will require the inclusion of shock term correction term in NEE models
42 citations
Posted Content•
TL;DR: In this paper, a recurrent neural network with long short-term memory (LSTM) was used to predict the temporal and spectral evolution of higher-order soliton compression and supercontinuum generation.
Abstract: The propagation of ultrashort pulses in optical fibre displays complex nonlinear dynamics that find important applications in fields such as high power pulse compression and broadband supercontinuum generation. Such nonlinear evolution however, depends sensitively on both the input pulse and fibre characteristics, and optimizing propagation for application purposes requires extensive numerical simulations based on generalizations of a nonlinear Schrodinger-type equation. This is computationally-demanding and creates a severe bottleneck in using numerical techniques to design and optimize experiments in real-time. Here, we present a solution to this problem using a machine-learning based paradigm to predict complex nonlinear propagation in optical fibres with a recurrent neural network, bypassing the need for direct numerical solution of a governing propagation model. Specifically, we show how a recurrent neural network with long short-term memory accurately predicts the temporal and spectral evolution of higher-order soliton compression and supercontinuum generation, solely from a given transform-limited input pulse intensity profile. Comparison with experiments for the case of soliton compression shows remarkable agreement in both temporal and spectral domains. In optics, our results apply readily to the optimization of pulse compression and broadband light sources, and more generally in physics, they open up new perspectives for studies in all nonlinear Schrodinger-type systems in studies of Bose-Einstein condensates, plasma physics, and hydrodynamics.
42 citations
TL;DR: In this article, the relative intensity noise (RIN) properties at different wavelengths and power levels for picosecond supercontinuum (SC) generated by pumping a PCF in its normal dispersion regime is investigated.
Abstract: The relative intensity noise (RIN) properties at different wavelengths and power levels for picosecond supercontinuum (SC) generated by pumping a PCF in its normal dispersion regime is investigated. For low power levels the all-normal SC is generated while the generated SC extends beyond the zero dispersion wavelength (ZDW) at high power levels. The RIN measurements are compared with a red-edge matched SC generated in a highly nonlinear PCF pumped in the anomalous dispersion regime close to its ZDW.
42 citations