Mobile source of high-energy single-cycle terahertz pulses

Степанов, А. Л.; Henin, Stefano; Petit, Yannick; Bonacina, Luigi; Kasparian, Jérôme; Wolf, Jean‐Pierre

doi:10.1007/s00340-010-4186-4

Cited by 67 publications

(40 citation statements)

References 16 publications

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“…The THz radiation was generated in a LiNbO 3 crystal via the tilted pulse-front pumping method [24] optimized for a high-energy pump [25,26] outside of the chamber and then introduced into vacuum through a z-cut quartz window. The laser intensity was monitored on a shot-toshot basis to compensate for the change in the THz field's power in the data analysis.…”

Section: Methodsmentioning

confidence: 99%

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Juranić¹,

Степанов²,

Ischebeck³

et al. 2014

Opt. Express

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Abstract:The accurate measurement of the arrival time of a hard X-ray free electron laser (FEL) pulse with respect to a laser is of utmost importance for pump-probe experiments proposed or carried out at FEL facilities around the world. This manuscript presents the latest device to meet this challenge, a THz streak camera using Xe gas clusters, capable of pulse arrival time measurements with an estimated accuracy of several femtoseconds. An experiment performed at SACLA demonstrates the performance of the device at photon energies between 5 and 10 keV with variable photon beam parameters. © 2014 Optical Society of AmericaOCIS codes: (120.0120) Instrumentation, measurement, and metrology; (020.0020) Atomic and molecular physics; (140.2600) Free-electron lasers (FELs). Kumagai, "A compact X-ray free-electron laser emitting in the sub-angstrom region," Nat. Photonics 6(8), 540-544 (2012). 4. E. Allaria, C. Callegari, D. Cocco, W. M. Fawley, M. Kiskinova, C. Masciovecchio, and F. Parmigiani, "The FERMI@Elettra free-electron-laser source for coherent x-ray physics: photon properties, beam transport system and applications," New J. Phys. 12(7), 075002 (2010). 5. P. Oberta, U. Flechsig, and R. Abela, "The SwissFEL facility and its preliminary optics beamline layout," Proc. Krausz, "X-ray pulses approaching the attosecond frontier," Science 291(5510), 1923-1927 (2001). 18. M. Uiberacker, E. Goulielmakis, R. Kienberger, A. Baltuska, T. Westerwalbesloh, U. Keineberg, U. Heinzmann, M. Drescher, and F. Krausz, "Attosecond metrology with controlled light waveforms," Laser Phys. 15, 195-204 (2005). 19. B. L. Henke, E. M. Gullikson, and J. C. Davis, "X-ray interactions-photoabsorption, scattering, transmission, and reflection at E=50-30,000 eV, z=1-92," At. Data Nucl. Data Tables 54(2), 181-342 (1993). 20. D. Irimia, D. Dobrikov, R. Kortekaas, H. Voet, D. A. van den Ende, W. A. Groen, and M. H. M. Janssen, "A short pulse (7 micros FWHM) and high repetition rate (dc-5 kHz) cantilever piezovalve for pulsed atomic and molecular beams," Rev. Sci. Instrum. 80(11), 113303 (2009). 21. O. F. Hagena and W. Obert, "Cluster formation in expanding supersonic jets-effect of pressure, temperature, nozzle size, and test gas," J. References and links:

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Section: Methodsmentioning

confidence: 99%

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Juranić¹,

Степанов²,

Ischebeck³

et al. 2014

Opt. Express

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“…We refer to the former situation as "low-inertia" sources of nonlinearity, and to the latter as "high-inertia" sources. For the case of ultrashort optical pulses, including intense picosecond terahertz pulses [4][5][6][7][8][9], the dominant source of nonlinearity tends to be the low-inertia, single-particle sources [13]. For the pulses in the visible and near IR spectral ranges, the dominant low-inertia mechanism of nonlinearity is electronic [12][13][14].…”

Section: The Vibrational Contribution To the Nonlinear Refractivementioning

confidence: 99%

“…Since their first demonstrations, terahertz techniques continue to find new applications from medical diagnostics and therapy to the detection of hidden substances, including explosives and drugs [1][2][3]. In recent years, pulsed sources of the terahertz radiation with sufficient intensity for the observation of nonlinear optical effects have appeared in a number of laboratories [4][5][6][7][8][9]. Investigation of the nonlinear optical effects in the terahertz spectral range has now become feasible [10,11].…”

Section: Introductionmentioning

confidence: 99%

Prediction of an extremely large nonlinear refractive index for crystals at terahertz frequencies

et al. 2015

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We develop a simple analytical model for calculating the vibrational contribution to the nonlinear refractive index n2 (Kerr coefficient) of a crystal in terms of known crystalline parameters such as the linear refractive index, the coefficient of thermal expansion, atomic density, and the reduced mass and the natural oscillation frequency of the vibrational modes of the crystal lattice. We show that the value of this contribution in the terahertz spectral region can exceed the value of the nonlinear refractive index n2 in the visible and near-IR spectral ranges (which is largely electronic in origin) by several orders of magnitude. For example, for crystal quartz the value of the Kerr coefficient in the low-frequency limit is n2 = 2.2 × 10 −9 esu or equivalently is 4.4 × 10 −16 m 2 /W, which is very much larger than its value of 3 × 10 −20 m 2 /W in the visible range. Furthermore, we present an analysis of the dispersion of n2 in the terahertz spectral range and show that even larger values of n2 occur for frequencies close to the vibrational resonances.

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“…In 2010, we reported [1] on a demonstration of a mobile source of high-energy near-single-cycle THz pulses based on a tilted pulse front optical rectification set-up, pumped by a mobile terawatt laser (Teramobile). The absolute value of the THz pulse energy was measured with a pyroelectric detector (Coherent Molectron J4-05).…”

mentioning

confidence: 99%

“…The company does not provide a spectral sensitivity dependence for this detector below 3.3 THz. In the reported experiments, generated THz pulses had broad spectra centred at 0.2 THz [1]. Previously, this detector was used for measuring the energy of near-single-cycle THz pulses with an average frequency of 0.9 THz generated by an accelerator-based source [2].…”

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confidence: 99%

Erratum to: Mobile source of high-energy single-cycle terahertz pulses

et al. 2014

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In 2010, we reported [1] on a demonstration of a mobile source of high-energy near-single-cycle THz pulses based on a tilted pulse front optical rectification set-up, pumped by a mobile terawatt laser (Teramobile). The absolute value of the THz pulse energy was measured with a pyroelectric detector (Coherent Molectron J4-05). The company does not provide a spectral sensitivity dependence for this detector below 3.3 THz. In the reported experiments, generated THz pulses had broad spectra centred at 0.2 THz [1]. Previously, this detector was used for measuring the energy of near-single-cycle THz pulses with an average frequency of 0.9 THz generated by an accelerator-based source [2]. Afterwards, it was reported that the sensitivity of the Coherent pyroelectric detector at 1 THz was approximately 1.8 times less than the specified sensitivity at 1.06 lm [3], and this difference has been take into account in a following publication [7].Recently, we compared the sensitivity of the Coherent Molectron J4-05 detector with that of another widely used pyroelectric THz detector (Microtech Instruments) [3][4][5][6]. The latter detector is provided with a calibration curve of the spectral dependence of the sensitivity in the frequency range of 0.12-3 THz. As a result, we found that at frequencies of 0.2-0.5 THz, the Coherent Molectron J4-05 detector underestimates the THz pulse energy by a factor of about 3.5 with regard to the Microtech Instruments detector. This finding evidences an additional drop of the Coherent Molectron J4-05 detector sensitivity for THz wave frequencies below 1 THz. By this comparison, we conclude that the THz pulse energy in Ref.[1] should significantly be re-estimated, up to 175 lJ (instead of the initially published value of 50 lJ), which is to the best of our knowledge the highest energy of near-single-cycle THz pulses generated by tabletop sources.

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Mobile source of high-energy single-cycle terahertz pulses

Cited by 67 publications

References 16 publications

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

High-precision x-ray FEL pulse arrival time measurements at SACLA by a THz streak camera with Xe clusters

Prediction of an extremely large nonlinear refractive index for crystals at terahertz frequencies

Erratum to: Mobile source of high-energy single-cycle terahertz pulses

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