Femtosecond optical pulse shaping for tunable terahertz pulse generation

Vidal, S.; Degert, Jérôme; Oberlé, J.; Freysz, É.

doi:10.1364/josab.27.001044

Cited by 31 publications

(14 citation statements)

References 32 publications

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“…About 90% of the output of the CPA is used for the generation of THz pulses by OR in a L 1 mm thick h110i ZnTe crystal. This beam can be spectrally tailored thanks to a pulse shaper [7]. The latter consists in a half-zero-dispersion line made of a 600 grooves∕mm grating and a f 600 mm cylindrical mirror that spatially disperses and focuses all the spectral components of the pulse in the Fourier plane where a programmable single liquid crystal spatial light modulator (LC-SLM) with 640 pixels, manufactured by Jenoptik AG, acts as a spectral filter [8][9][10].…”

Section: Methodsmentioning

confidence: 99%

Optimized terahertz generation via optical rectification in ZnTe crystals

Vidal¹,

Degert²,

Tondusson³

et al. 2013

J. Opt. Soc. Am. B

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International audienceWe report on optimal control of the output energy of terahertz (THz) waves generated by optical rectification of femtosecond pulses in ZnTe crystals. An enhancement by a factor up to 2.4 is obtained with chirped pump pulses. The optimized THz wave also displays a spectral broadening. The influence of the optical pulse shaping on the pump pulse propagation, and consequently on the THz generation efficiency, is numerically investigated and discussed

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Section: Methodsmentioning

confidence: 99%

Optimized terahertz generation via optical rectification in ZnTe crystals

Vidal¹,

Degert²,

Tondusson³

et al. 2013

J. Opt. Soc. Am. B

Self Cite

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“…In addition, THz radiation has proven to be an excellent tool in non-destructive and material-specific imaging 4 and is under consideration as an information carrier in short-range wireless communication at THz bit rates, thereby potentially replacing slower current gigahertz-based technology. 5 Such applications heavily rely on the manipulation of THz radiation, 6 and static elements such as lenses, waveplates and frequency filters are readily available. 7 However, the dynamic manipulation of THz transients with subcycle precision is required, as well in fields such as THz telecommunication (where information must be imprinted on a pulse train 5 ) and THz coherent control over matter (where tailored waveforms have been predicted to drive, for instance, the configuration of a crystal lattice along a desired path 8 ).…”

Section: Introductionmentioning

confidence: 99%

Subcycle control of terahertz waveform polarization using all-optically induced transient metamaterials

et al. 2014

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Coherent radiation with frequencies ranging from 0.3 to 30 THz has recently become accessible using femtosecond laser technology. These terahertz (THz) waves have already been applied in spectroscopy and imaging and can be manipulated using static optical elements such as lenses, polarizers and filters. However, ultrafast modulation of THz radiation is required as well, for instance, in short-range wireless communication or for preparing shaped THz transients for the coherent control of numerous material excitations. Here, we demonstrate an all-optically created transient metamaterial that allows us to manipulate the polarization of THz waveforms with subcycle switch-on times. The polarization-modulated pulses are potentially interesting for controlling elementary motions such as the vibration of crystal lattices, the rotation of molecules and the precession of spins.

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“…Sequence of THz phase-locked pulses experimentally generated by applying a triangular phase modulation with Δτ = 2.5 ps and δω = 0 to the rectified NIR pulse: (a) cross-correlation of the initial TL NIR pulse, (b) associated THz waveform and (c) corresponding spectrum. (d) cross-correlation of the NIR pulse pair, (e) associated THz waveform and (f) corresponding spectrum (taken from [37]). [33].…”

Section: Triangular Phase Modulation: Generation Of Phase-locked Thz mentioning

confidence: 99%