Efficient broadband 400  nm noncollinear second-harmonic generation of chirped femtosecond laser pulses in BBO and LBO

Gobert, O.; Mennerat, Gabriel; Maksimenka, Raman; Fedorov, N.; Perdrix, M.; Guillaumet, D.; Ramond, C.; Habib, J.; Prigent, Christophe; Vernhet, Dominique; Thomas, O.; Comte, M.

doi:10.1364/ao.53.002646

Cited by 18 publications

(7 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yet, there is increasing evidence for the advanced degrees of control that they can provide. They turn out to be extremely advantageous in nonlinear optics for elementary applications such as sum frequency generation [9,10], but also in more advanced schemes. For instance, a simple effect known as simultaneous spatio-temporal focusing has become widely exploited in nonlinear microscopy to increase the field of view without compromising depth resolution [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Sainte-Marie¹,

Gobert²,

Quéré³

2017

Optica

Self Cite

167

109

View full text Add to dashboard Cite

Due to their broad spectral width, ultrashort lasers provide new possibilities to shape light beams and control their properties, in particular through the use of spatio-temporal couplings. In this context, we present a theoretical investigation of the linear propagation of ultrashort laser beams that combine temporal chirp and a standard aberration known as longitudinal chromatism. When such beams are focused in a vacuum, or in a linear medium, the interplay of these two effects can be exploited to set the velocity of the resulting intensity peak to arbitrary values within the Rayleigh length, i.e. precisely where laser pulses are generally used. Such beams could find groundbreaking applications in the control of laser-matter interactions, in particular for laser-driven particle acceleration.

show abstract

Section: Introductionmentioning

confidence: 99%

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Sainte-Marie¹,

Gobert²,

Quéré³

2017

Optica

Self Cite

167

109

View full text Add to dashboard Cite

show abstract

“…For example, Ref. 17 achieves > 65% efficiency with ∼ 1 mJ pulses by using noncollinear, chirped pumps with an optimized pulse-front tilt. The intensity in the crystal is kept low, < 10 GW/cm 2 , by stretching the pulse to the picosecond range, and using a thicker crystal to make up for the reduced nonlinearity.…”

Section: Second Harmonic Generationmentioning

confidence: 99%

Seed source for plasma compression in the long wavelength infrared

et al. 2021

View full text Add to dashboard Cite

Two color laser pulses are used to form an air plasma and generate broadband infrared radiation suitable as a seed for backward Raman amplification of CO 2 laser pulses. Broadband radiation in the atmospheric window from 8-14 microns is observed. The infrared radiation is characterized using a long wavelength grating spectrometer specially designed to accept an ionizing laser filament at its input plane. The LWIR yield is greatly enhanced by chirping the drive pulse. Unidirectional pulse propagation simulations suggest that this is due in part to the dependence of the nonlinear refractive index on the pulse duration.

show abstract

“…The resulting amplitude of the energy modulation after the dispersive chicane is Δγ∕σ γ 6.4. Such laser pulses with a wavelength centered at 400 nm can be found in [32][33][34][35]. Note that the lasing part of the current profile can be controlled by the slotted foil system [21].…”

Section: B Attosecond-tw Pulse Generation In the Hard X-ray Regimementioning

confidence: 99%

Generation of an isolated attosecond pulse via current modulation induced by a chirped laser pulse in an x-ray free-electron laser

et al. 2018

View full text Add to dashboard Cite

Aiming for the future upgrade of a hard x-ray beamline at the Pohang accelerator laboratory x-ray free-electron laser (PAL-XFEL), we first analyze the scheme recently proposed for the attosecond-terawatt (TW) x-ray pulse [Phys. Rev. Lett. 110, 084801 (2013)]. An x-ray pulse with 32 attosecond full-width half maximum (FWHM) pulse duration and ∼4 TW in power is shown in simulations using the PAL-XFEL parameters. Furthermore, to remove neighboring radiation pulses and to generate an isolated attosecond-TW x-ray pulse, the role of optical laser frequency chirp is examined on the electron beam current modulation as well as on the x-ray pulse generation in the undulator. Our simulations show an isolated x-ray pulse with 42 attosecond FWHM pulse duration and ∼3.5 TW in power for the optimal frequency chirp of a 400 nm optical laser. Recently, in a simpler method [J. Synchrotron Radiat. 23, 1273 (2016)] and [Phys. Rev. ST Accel. Beams 8, 040701 (2005)], using a frequencychirped optical laser and the electron beam delays in between undulator sections, it has been reported that an isolated attosecond-TW x-ray pulse can be obtained at the undulator end. For optimal chirp in this simple setup, we show 50 attosecond FWHM pulse duration and ∼3 TW in power with ∼7.5 × 10 10 photons per pulse at 0.1 nm radiation wavelength. Generation of such inherently synchronized, powerful single attosecond x-ray pulses at PAL-XFEL will be advantageous to the pump-probe experiments in the study of ultrafast dynamics.

show abstract

Efficient broadband 400 nm noncollinear second-harmonic generation of chirped femtosecond laser pulses in BBO and LBO

Cited by 18 publications

References 36 publications

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Controlling the velocity of ultrashort light pulses in vacuum through spatio-temporal couplings

Seed source for plasma compression in the long wavelength infrared

Generation of an isolated attosecond pulse via current modulation induced by a chirped laser pulse in an x-ray free-electron laser

Contact Info

Product

Resources

About