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The Non-Mode-Locked Picosecond Laser

  • F. Armani
  • F. De Martini
  • P. Mataloni
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 23)

Abstract

In the present paper we report the first application of the re generative compression technique to the self-injected Nd-YAG laser to generate band-limited picosecond pulses [1,2]. With this technique we are able to reduce the typical 30 nanosecond pulse duration of a normal Pockets Cell Q-switched laser down to less than 6ps, realizing a pulse compression by about 3 orders of magnitude. This is achieved by first stepping down the Q-switched pulse to a seed pulse about lns long using the self-injection (i.e. cavity flipping) technique. Then this seed pulse is amplified by the active medium and, at the same time, undergoes a further compression due to the nonlinear transmission characteristics of a saturable dye flowing in a cell inserted in the laser cavity. Since the shortening process is quasi-adiabatic, very high pulse peak power can be obtained, limited basically by damage to the optical components and by effects of nonlinear loss and self actions arising in the active medium [2]. In addition to that, the system has very good stability characteristics.

Keywords

Active Medium Pulse Train Laser Cavity Pulse Compression Picosecond Laser 
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References

  1. 1.
    C.H. Brito Cruz, E. Palange and F. De Martini: Optics Comm. 39, 331 (1981).CrossRefGoogle Scholar
  2. 2.
    C.H. Brito Cruz, F. De Martini, H.L. Fragnito and E. Palange: Optics Comm. 40, 298 (1982).CrossRefGoogle Scholar
  3. 3.
    J.E. Murray and D.J. Kuizenga: Appl. Phys. Lett. 37, 27 (1980).CrossRefGoogle Scholar
  4. 4.
    J.E. Murray: Lawrence Livermore Lab. UCRL-77, 210–219 (1977).Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 1982

Authors and Affiliations

  • F. Armani
    • 1
  • F. De Martini
    • 1
  • P. Mataloni
    • 1
  1. 1.Quantum Optics LaboratoryIstituto di Fisica, “G. Marconi”RomaItaly

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