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High-energy sub-picosecond pulse generation from 3 to 20 μm

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Abstract.

We have produced sub-picosecond pulses in the wavelength range 3–20 μm with energies as high as 2 μJ, through difference-frequency mixing in the crystal GaSe. Input beams for the non-linear mixing process came from either a regenerative amplifier operating in two-color mode, due to the spectral shaping of its injection beam, or an optical parametric amplifier (OPA). The first method was straightforward to implement and provided easy access to the wavelength range 10–20 μm. The intermediate OPA stage, though technically more involved, allowed higher input beam irradiances and resulted in shorter duration MIR pulses, greater conversion efficiency and access to the MIR region between 3 and 10 μm.

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Authors and Affiliations

  1. Steacie Institute of Molecular Sciences, National Research Council of Canada, Ottawa, Ontario, K1A 0R6, Canada, CA

    J.M. Fraser, I.W. Cheung, F. Légaré, D.M. Villeneuve & P.B. Corkum

  2. Laboratoire d’Optique et Biosciences, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7645, Institut National de la Santé et de la Recherche Médicale Unité, Ecole Polytechnique, Ecole Nationale Supérieure de Techniques Avancées, 91128 Palaiseau Cedex, France, FR

    M. Joffre

  3. Laboratoire d’Optique Appliquée, Ecole Nationale Supérieure de Techniques Avancées, Ecole Polytechnique, Centre National de la Recherche Scientifique, Unité Mixte de Recherche 7639, 91761 Palaiseaux Cedex, France, FR

    J.P. Likforman

Authors
  1. J.M. Fraser
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  2. I.W. Cheung
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  3. F. Légaré
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  4. D.M. Villeneuve
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  5. J.P. Likforman
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  6. M. Joffre
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  7. P.B. Corkum
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Additional information

Received: 21 September 2001 / Revised version: 7 January 2002 / Published online: 16 July 2002

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Fraser, J., Cheung, I., Légaré, F. et al. High-energy sub-picosecond pulse generation from 3 to 20 μm. Appl Phys B 74 (Suppl 1), s153–s156 (2002). https://doi.org/10.1007/s00340-002-0902-z

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  • DOI: https://doi.org/10.1007/s00340-002-0902-z

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