Wavelength tuning of femtosecond pulses generated in nonlinear crystals by using diffractive lenses

Mínguez‐Vega, Gladys; Romero, Carolina; Mendoza-Yero, Omel; Aldana, Javier R. Vázquez de; Borrego-Varillas, Rocío; Méndez, C.; Andrés, Pedro; Láncis, Jesús; Climent, Vicent; Roso, L.

doi:10.1364/ol.35.003694

Cited by 16 publications

(16 citation statements)

References 10 publications

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“…Recently, they have been used with ultrashort laser pulses for applications such as tuning the central wavelength of the SHG [12,13] or the control of the supercontinuum generation structure and broadening [14]. These applications are based on the evolution of the spatiospectral and spatiotemporal features of the kinoform DL along the focus.…”

Section: Introductionmentioning

confidence: 99%

Frequency resolved wavefront retrieval and dynamics of diffractive focused ultrashort pulses

et al. 2012

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In this work we demonstrate the ability of the spatiotemporal characterization technique STARFISH to retrieve the wavelength dependent wavefront of focused ultrashort laser pulses. The high resolution achievable with this technique allows measuring the wavefront at the focal spot. In particular, the method is applied to study the effects of focusing with a kinoform diffractive lens. The evolution from converging to diverging wavefronts as the pulse propagates along the focal region is analyzed for each wavelength. The spatiotemporal intensity and spatially resolved spectrum structure of the pulses, as well as their profiles on axis, are also presented. Numerical simulations of the propagation of such pulses confirm the experimental results.

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Section: Introductionmentioning

confidence: 99%

Frequency resolved wavefront retrieval and dynamics of diffractive focused ultrashort pulses

et al. 2012

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“…As discussed in [20,22], for the wide spectral bandwidth of femtosecond pulses, we can define an extended focal region Δf as the distance along the propagation axis between the foci of the extreme wavelengths of a laser with spectral bandwidth Δλ. It can be determined from Eq.…”

Section: Methodsmentioning

confidence: 99%

Femtosecond filamentation in sapphire with diffractive lenses

et al. 2013

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In this paper, we demonstrate novel properties in the phenomenology of supercontinuum generation in sapphire with diffractive lenses and provide a complete spatial, spectral, and temporal characterization of the so-generated pulses. Filament formation inside the sample is analyzed and related to the measured spectra, finding that clipping of the filament results in blueshifted spectra. For comparison, filament formation with refractive lenses is also examined, and the roles of diffraction and extension of the focusing region are inspected. The tunability achieved in the anti-Stokes side of the spectrum is also extended to the ultraviolet by frequency mixing with infrared femtosecond pulses.

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“…On the other hand, the use of diffractive optics has demonstrated its capability to provide not only compact temporal pulse shapers [15], but also to manipulate nonlinear optical phenomena in the axial [16,17], as well as in the transversal direction of the pulse propagation [18]. In this context, we will focus on filamentation [19], which is basically a non-linear propagation phenomenon that is extended a distance longer than the Rayleigh range associated with the pulse.…”

Section: Introductionmentioning

confidence: 99%

Diffractive control of 3D multifilamentation in fused silica with micrometric resolution

et al. 2016

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Abstract:We show that a simple diffractive phase element (DPE) can be used to manipulate at will the positions and energy of multiple filaments generated in fused silica under femtosecond pulsed illumination. The method allows obtaining three-dimensional distributions of controlled filaments whose separations can be in the order of few micrometers. With such small distances we are able to study the mutual coherence among filaments from the resulted interference pattern, without needing a two-arm interferometer. The encoding of the DPE into a phase-only spatial light modulator (SLM) provides an extra degree of freedom to the optical set-up, giving more versatility for implementing different DPEs in real time. Our proposal might be particularly suited for applications at which an accurate manipulation of multiple filaments is required.

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Wavelength tuning of femtosecond pulses generated in nonlinear crystals by using diffractive lenses

Cited by 16 publications

References 10 publications

Frequency resolved wavefront retrieval and dynamics of diffractive focused ultrashort pulses

Frequency resolved wavefront retrieval and dynamics of diffractive focused ultrashort pulses

Femtosecond filamentation in sapphire with diffractive lenses

Diffractive control of 3D multifilamentation in fused silica with micrometric resolution

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