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Applied Physics Letters / Volume 92 / Issue 2 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 92, 021125 (2008); http://dx.doi.org/10.1063/1.2836252 (3 pages)

Generation of submicrojoule high harmonics using a long gas jet in a two-color laser field

I Jong Kim1, Gae Hwang Lee1, Seung Beom Park1, Yong Soo Lee1, Tae Keun Kim1, Chang Hee Nam1, Tomas Mocek2, and Krzysztof Jakubczak2

1Department of Physics and Coherent X-Ray Research Center, Korea Advanced Institute of Science and Technology, 373-1, Kuseong-dong, Yuseong-gu, Daejeon 305-701, Korea
2Department of X-ray Lasers, Institute of Physics, PALS Centre Na Slovance 2, 182 21 Prague 8, Czech Republic

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(Received 13 October 2007; accepted 30 December 2007; published online 18 January 2008)

We have achieved very efficient high-harmonic generation in a two-color laser field using a long gas jet of He. With the optimization of laser parameters and target conditions, strong harmonics were produced at 2(2n+1)th orders in an orthogonally polarized two-color field. The strongest harmonic at the 38th order (21.6 nm) reached an energy of 0.6 μJ with a 6 mm gas jet, giving a conversion efficiency as high as 2×10−4.

© 2008 American Institute of Physics

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KEYWORDS and PACS

Keywords

gas lasers, helium, high-speed optical techniques, optical harmonic generation, optimisation

PACS

  • 42.65.Ky

    Frequency conversion; harmonic generation, including higher-order harmonic generation

  • 51.70.+f

    Optical and dielectric properties

  • 32.80.-t

    Photoionization and excitation

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.2836252

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
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    E. Takahashi, Y. Nabekawa, and K. Midorikawa, Appl. Phys. Lett. 84, 4 (2004)APPLAB000084000001000004000001.

    H. T. Kim, I. J. Kim, D. G. Lee, K.-H. Hong, Y. S. Lee, V. Tosa, and C. H. Nam, Phys. Rev. A 69, 031805(R) (2004).

    I. J. Kim, C. M. Kim, H. T. Kim, G. H. Lee, Y. S. Lee, J. Y. Park, D. J. Cho, and C. H. Nam, Phys. Rev. Lett. 94, 243901 (2005).

    J.-F. Hergott, M. Kovacev, H. Merdji, C. Hubert, Y. Mairesse, E. Jean, P. Breger, P. Agostini, B. Carre, and P. Salieres, Phys. Rev. A 66, 021801 (2002).

    C. M. Kim, I. J. Kim, and C. H. Nam, Phys. Rev. A 72, 033817 (2005).

    D. G. Lee, H. T. Kim, K. H. Hong, C. H. Nam, I. W. Choi, A. Bartnik, and H. Fiedorowicz, Appl. Phys. Lett. 81, 3726 (2002)APPLAB000081000020003726000001.

    V. Tosa, E. Takahashi, Y. Nabekawa, and K. Midorikawa, Phys. Rev. A 67, 063817 (2003).

    E. Constant, D. Garzella, P. Breger, E. Mevel, C. Dorrer, C. Le Blanc, F. Salin, and P. Agostini, Phys. Rev. Lett. 82, 1668 (1999).

    B. Rus, T. Mocek, A. R. Prag, M. Kozlova, G. Jamelot, A. Carillon, D. Ros, D. Joyeux, and D. Phalippou, Phys. Rev. A 66, 063806 (2002).


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