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Christoph Peter Hauri

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Publications associées (85)

Intense THz radiation produced in organic salt crystals for high-field applications

Christoph Peter Hauri

Organic stilbazolium salt crystals pumped by intense, ultrashort mid-infrared laser have been investigated for efficient THz generation by optical rectification. In this paper we present our latest results in view of the generation of single-cycle and high ...

2013

Multi-octave MV/cm pulses filling the THz gap

Christoph Peter Hauri

Single-cycle THz pulses with electric field strength of MV/cm are required for wide range of applications from physics to biology and medicine [1]. Presently, high fields are still challenging to produce in the THz gap (0.1-10 THz) where important condense ...

IEEE2013

XPW based self-referenced spectral interferometry for few-cycle pulse characterization in the short wavelength IR

Christoph Peter Hauri

2013

Spectral characterization of fully phase-matched high harmonics generated in a hollow waveguide for free-electron laser seeding

Fernando Ardana Lamas, Christoph Peter Hauri

We present a bright and coherent soft x-ray source based on high harmonic generation delivering up to 10(10) photons per second centered at 120 eV within an 80 eV bandwidth. The source profits from fully phase-matched harmonic generation in an unmodulated ...

Institute of Physics (IoP) and Deutsche Physikalische Gesellschaft2013

Spatiotemporal Focusing Dynamics of Intense Supercontinuum THz Pulses

Christoph Peter Hauri

High-field terahertz (THz) single-cycle pulses with 1.5 MV/cm are generated by optical rectification in the stilbazolium salt crystal 4-N, N-dimethylamino-4'-N'-methyl-stilbazolium 2,4,6-trimethylbenzenesulfonate. We show experimentally that the generated ...

Amer Physical Soc2013

Coherent manipulation of free amino acids fluorescence

Christoph Peter Hauri

Coherent manipulation of molecular wavepackets in biomolecules might contribute to the quest towards label-free cellular imaging and protein identification. We report the use of optimally tailored UV laser pulses in pump-probe depletion experiments that se ...

2012

Self-referenced spectral interferometry for ultrashort infrared pulse characterization

Christoph Peter Hauri

We demonstrate for the first time (to our knowledge) characterization of ultrashort IR pulses by self-referenced spectral interferometry. Both sub-55-fs pulses from 1.4 mu m to 2 mu m and broadband 2.5-cycle pulses at 1.65 mu m (13 fs FWHM) are characteriz ...

Optical Soc Amer2012

Laser-driven generation of intense single-cycle THz field

Fernando Ardana Lamas, Christoph Peter Hauri

We report on laser-based, high power single-cycle THz source. The THz radiation is generated by four-wave mixing in plasma and by optical rectification in organic salt crystal pumped by powerful optical parametric amplifier. The first approach permits the ...

2012

Deep-ultraviolet picosecond flat-top pulses by chirp-matched sum frequency generation

Christoph Peter Hauri

Picosecond, flat-top, deep-UV pulses are needed to generate high-brightness electron beams to efficiently drive x-ray free electron lasers. Current metal photocathodes have low efficiency and therefore require high-energy pulses, and the generation of high ...

2012

Scaling submillimeter single-cycle transients toward megavolts per centimeter field strength via optical rectification in the organic crystal OH1

Christoph Peter Hauri

We present the generation of high-power single-cycle terahertz (THz) pulses in the organic salt crystal 2-[3-(4-hydroxystyryl)-5.5-dimethylcyclohex-2-enylidene]malononitrile or OH1. Broadband THz radiation with a central frequency of 1.5 THz (lambda(c) = 2 ...

2012

Large Charge Extraction from Metallic Multifilamentary Nb3Sn Photocathode

Fernando Ardana Lamas, Christoph Peter Hauri

The current density limit for photoemission from metals was measured in an rf photogun to be below 10(9) A/m(2). We have achieved 1.6 x 10(11) A/m(2) by photofield emission from a new type of photocathode made from a metallic-composite, multifilamentary Nb ...

2012

High quantum efficiency, low emittance electron beam from multifilamentary cathodes

Fernando Ardana Lamas, Christoph Peter Hauri

We present a new type of metallic cathode, reaching quantum efficiency of 10(3). This value together with the estimated emittance, gives a brilliance of 2.8x10(13) A/m(2), making this cathode an excellent candidate for an ultrashort electron source. (C) 20 ...

Ieee2012

Chirped pulses sum frequency generation for deep - UV picosecond pulse shaping

Christoph Peter Hauri

We show by experiments and simulations that properly chirped laser pulses enable efficient and broadband sum frequency generation in nonlinear crystals. We achieved high energy, picosecond deep-UV pulses with spectral width one order of magnitude greater t ...

2012

Towards High-power Single-cycle THz Laser for Initiating High-field-sensitive Phenomena

Fernando Ardana Lamas, Christoph Peter Hauri

Powerful THz radiation confined in one field period or less is an adequate tool for triggering nonlinear actions. We show results towards the realization of a tunable high-power THz source based on a laser-driven frequency conversion scheme in plasma and n ...

2011

Efficient broad-band harmonic generation for UV picosecond temporal pulse shaping

Christoph Peter Hauri

We present efficient and broadband sum frequency generation tenfold beyond nonlinear crystal's acceptance bandwidth. Versatile shapes, up to 4nm bandwidth and 15% efficiency have been achieved for ps flattop UV pulse generation. © 2010 Optical Society of A ...

2011

High-energy deep-UV temporal pulse shaping by chirp-assisted broadband frequency conversion

Christoph Peter Hauri

We present a novel and highly efficient temporal pulse shaping technique for the generation of flattop-like picosecond pulses in the deep UV. Using standard sum frequency generation (SFG) of a Ti:sapphire laser but with a pair of properly chirped beams pri ...

2011

Strong-field single-cycle THz pulses generated in an organic crystal

Fernando Ardana Lamas, Christoph Peter Hauri

We present high-power single-cycle carrier-envelope phase locked THz pulses at a central frequency of 2.1 THz with MV/cm electric field strengths and magnetic field strengths beyond 0.3 T. The THz radiation is generated by optical rectification in an organ ...

American Institute of Physics2011

Ultrabroadband TW-class Ti:sapphire laser system with adjustable central wavelength, bandwidth and multi-color operation

Christoph Peter Hauri

We demonstrate a versatile tunable and highly stable ultrabroadband Ti:sapphire chirped pulse amplification system with a compressed pulse energy of 20 mJ at 100 Hz repetition rate. High power Ti: Sa systems in principle do not offer wavelength tunability ...

Optical Society of America2011

Can Energetic Terahertz Pulses Initiate Surface Catalytic Reactions on the Picosecond Time Scale?

Christoph Peter Hauri

In preparation for picosecond pump-probe experiments at the SwissFEL X-ray laser facility, the feasibility of collectively initiating surface chemical reactions using energetic pulses of terahertz radiation is being tested. © Schweizerische Chemische Gesel ...

Schweizerische Chemische Gesellschaft2011

Direct shaping of picosecond high energy deep ultraviolet pulses

Christoph Peter Hauri

We demonstrate temporally shaped pulses in the deep ultraviolet spectral range (270 nm) with energies up to 37 mu J using an efficient prism stretcher and an acousto-optic programmable dispersive filter (AOPDF) applied directly in the UV. The scheme allows ...

Springer-Verlag2011

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