Optimizing high order harmonic generation in absorbing gases

Me´vel, Eric; Constant, Eric; Garzella, David; Breger, Pierre; Dorrer, Christophe; Le Blanc, Catherine; Salin, Franc¸ois; Agostini, Pierre
July 2000
AIP Conference Proceedings;2000, Vol. 525 Issue 1, p373
Academic Journal
We study high harmonic generation in absorbing and dispersive atomic gas media. For ultrashort fundamental pulses, the harmonic conversion efficiency is mainly limited by the absorption in the gas. This limit is found independent on the gas density for both the case of a loosely focused Gaussian beam or a beam guided in a capillary waveguide. Under optimum conditions, we have measured the highest conversion efficiency to date (4×10[sup -5]) for the 15th harmonic generated in xenon using a 40 fs, 800 nm pulse at a 1 kHz repetition rate corresponding to 50 μW for this harmonic. © 2000 American Institute of Physics.


Related Articles

  • Generation of the second optical harmonic in porous-silicon-based structures with a photonic band gap. Golovan’, L. A.; Zheltikov, A. M.; Kashkarov, P. K.; Koroteev, N. I.; Lisachenko, M. G.; Naumov, A. N.; Sidorov-Biryukov, D. A.; Timoshenko, V. Yu.; Fedotov, A. B. // JETP Letters;2/25/99, Vol. 69 Issue 4, p300 

    Efficient generation of the second optical harmonic is observed experimentally in a multilayer periodic structure based on porous silicon. The second-harmonic signal is much stronger than the signal from a uniform porous silicon layer or from the single-crystal silicon substrate. The...

  • Measurement of parametric interactions in YBa[sub 2]Cu[sub 3]O[sub 7-x] step edge junctions. Kain, Aron Z.; Fetterman, H.R. // Applied Physics Letters;9/13/1993, Vol. 63 Issue 11, p1564 

    Examines the fabrication of YBa[sub 2]Cu[sub 3]O[sub 7-x] step edge Josephson junctions for four photon parametric effects at ten gigahertz. Relationship between reflected signal power and pump power; Comparison with the three photon process; Occurrence of odd harmonics in four photon...

  • Sub-10-fs laser-driven harmonic sources. Hentschel, M.; Schnu¨rer, M.; Krausz, F. // AIP Conference Proceedings;2000, Vol. 525 Issue 1, p361 

    Recent progress in ultrafast laser technology has resulted in the generation of sub-10-fs near-infrared pulses at subterawatt peak power levels. In these pulses the electric and magnetic fields perform only a few oscillations within the full width at half maximum of the intensity envelope and...

  • Optimization of the focused flux of high harmonics. Kazamias, S.; Douillet, D.; Valentin, C.; Lefrou, Th.; Grillon, G.; Mullot, G.; Augé, F.; Mercére, P.; Zeitoun, Ph.; Balcou, Ph. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Sep2003, Vol. 26 Issue 1, p47 

    Following the theoretical predictions [1], the observation of two-photon processes by interaction of vacuum ultraviolet (VUV) radiation with inner-shell levels of atoms requires focused intensities in the 1013-1014 W/cm2 range. Our aim is to reach this regime in order to study non-linear optics...

  • Pulse width measurement of high-order harmonics by autocorrelation. Kobayashi, Y.; Ohno, T.; Sekikawa, T.; Nabekawa, Y.; Watanabe, S. // Applied Physics B: Lasers & Optics;2000, Vol. 70 Issue 3, p389 

    Abstract. Pulse widths of the 7th and 9th harmonics of a Ti:sapphire (TIS) laser have been measured by an autocorrelation technique using two-photon and three-photon ionization of He and Ar as nonlinear phenomena. The pulse widths of the 7th and 9th harmonics were 47 fs and 27 fs, respectively,...

  • Enhancement of visible second-harmonic generation in epitaxial GaN-based two-dimensional photonic crystal structures. Vecchi, Gabriele; Torres, Jérémi; Coquillat, Dominique; d'Yerville, Marine Le Vassor; Malvezzi, Andrea Marco // Applied Physics Letters;2/23/2004, Vol. 84 Issue 8, p1245 

    Second-harmonic (SH) radiation generated in reflection is measured from the surface of a two-dimensional triangular photonic crystal in a GaN layer. A very large SH enhancement is observed when the incident radiation is resonant with a leaky photonic mode. The potential of second-harmonic...

  • Quantum-cascade laser is designed for third-harmonic emission.  // Laser Focus World;Aug2004, Vol. 40 Issue 8, p15 

    Reports on the development of a quantum-cascade laser that has an active region designed to simultaneously emits its fundamental wavelength and third harmonic. Features of the indium gallium arsenide/aluminum indium arsenide device; Fundamental emission; Third-order wavelength.

  • Two-color pump-probe experiments in helium using high-order harmonics. Johansson, A.; Raarup, M.K.; Li, Z.S.; Lokhnygin, V.; Descamps, D.; Lyngå, C.; Mevel, E.; Larsson, J.; Wahlström, C.-G.; Aloise, S.; Gisselbrecht, M.; Meyer, M.; L'Huillier, A. // European Physical Journal D -- Atoms, Molecules, Clusters & Opti;Jan2003, Vol. 22 Issue 1, p3 

    A pump-probe technique has been applied for measuring the lifetimes and absolute photoionization cross-sections of excited He states. The 1s2p ¹P and 1s3p ¹P states of He are excited by using the 13th and the 14th harmonic, respectively, of a tunable 70 ps dye laser generated in a Kr gas...

  • Elliptically polarized harmonic emission in a quantum dot. Xie, Yan; Duan, Suqing; Zhang, Wei; Chen, Jing; Chu, Weidong // Journal of Applied Physics;Mar2012, Vol. 111 Issue 5, p054309 

    We study the polarization of harmonic emission in a V-type three-level system formed in a real asymmetrical quantum dot. It is found that the polarization property of harmonics can be strongly modulated by the intensity of linearly polarized driving field. Under the modulation of the field,...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics