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  1. Article

    Open Access

    Map** anomalous dispersion of air with ultrashort mid-infrared pulses

    We present experimental studies of long-distance transmission of ultrashort mid-infrared laser pulses through atmospheric air, probing air dispersion in the 3.6–4.2-μm wavelength range. Atmospheric air is stil...

    A. V. Mitrofanov, A. A. Voronin, D. A. Sidorov-Biryukov, M. V. Rozhko… in Scientific Reports (2017)

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  2. No Access

    Article

    Conductivity and discharge guiding properties of mid-IR laser filaments

    The electric properties of mid-IR filaments in air have been investigated in comparison with their more traditional near-IR counterparts. Although the number of ions left after the pulse is similar for both sp...

    D. Mongin, V. Shumakova, S. Ališauskas, E. Schubert, A. Pugžlys… in Applied Physics B (2016)

  3. Article

    Open Access

    Multi-millijoule few-cycle mid-infrared pulses through nonlinear self-compression in bulk

    The physics of strong-field applications requires driver laser pulses that are both energetic and extremely short. Whereas optical amplifiers, laser and parametric, boost the energy, their gain bandwidth restr...

    V. Shumakova, P. Malevich, S. Ališauskas, A. Voronin… in Nature Communications (2016)

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  4. Article

    Open Access

    Mid-infrared laser filaments in the atmosphere

    Filamentation of ultrashort laser pulses in the atmosphere offers unique opportunities for long-range transmission of high-power laser radiation and standoff detection. With the critical power of self-focusing...

    A. V. Mitrofanov, A. A. Voronin, D. A. Sidorov-Biryukov, A. Pugžlys… in Scientific Reports (2015)

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  5. No Access

    Article

    10-mJ optically synchronized CEP-stable chirped parametric amplifier at 1.5 μm

    We demonstrate the generation of 10-mJ 1.5-μm few-cycle pulses from a 4-stage OPCPA system. The system is based on a fusion of femtosecond DPSS Yb technology and a picosecond Nd:YAG pump laser. In a first prel...

    O. D. Mücke, D. Sidorov, P. Dombi, A. Pugžlys, S. Ališauskas… in Optics and Spectroscopy (2010)

  6. No Access

    Article

    Spectroscopy and lasing of cryogenically cooled Yb, Na:CaF2

    Absorption, photoluminescence and cw-lasing properties of a novel Na+-codoped Yb3+:CaF2 laser crystal are investigated in the temperature range from 10 K to 290 K. Cryogenic cooling leads to the disappearance of ...

    A. Pugžlys, G. Andriukaitis, D. Sidorov, A. Irshad, A. Baltuška… in Applied Physics B (2009)

  7. No Access

    Chapter and Conference Paper

    Multimillijoule Optically Synchronized and Carrier-Envelope-Phase-Stable Chirped Parametric Amplification at 1.5 μm

    Efficient infrared 35-THz-wide parametric amplification at 1.5 μm with the energy of ~10 mJ is obtained in a 4-stage OPCPA using a combination of a 1030-nm 200-fs Yb- and a 1064-nm 60-ps Nd amplifier seeded wi...

    O. D. Mücke, D. Sidorov, P. Dombi, A. Pugžlys, S. Ališauskas… in Ultrafast Phenomena XVI (2009)

  8. No Access

    Article

    3nj coefficients of u q(2) and multiple basic hypergeometric series

    Triple-sum formulas for 9j coefficients and multiple-sum expressions [with five or four separate sums of the p+1 F p(1) or p+1 φ p type, p=2, 3, 4] for the 12j coefficients of both kinds (with or without braidi...

    S. Ališauskas in Physics of Atomic Nuclei (2001)