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Optics Letters

Optics Letters


  • Vol. 27, Iss. 2 — Jan. 15, 2002
  • pp: 131–133

Programmable amplitude- and phase-modulated femtosecond laser pulses in the mid-infrared

T. Witte, D. Zeidler, D. Proch, K. L. Kompa, and M. Motzkus  »View Author Affiliations

Optics Letters, Vol. 27, Issue 2, pp. 131-133 (2002)

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We present a scheme to produce programmable phase- and amplitude-modulated femtosecond laser pulses in the mid-infrared regime of 3–10μm by difference frequency mixing. The 80-fs signal output of an optical parametric amplifier is shaped with a liquid-crystal mask and mixed in an AgGaS2 crystal with a temporally stretched idler pulse. Without changing the mechanical alignment, we produce programmable amplitude modulations and chirped pulses at λ=3μm with energy as high has thas 1μJ . This scheme, further, allows the generation of controllable pulse sequences. The results are in good agreement with theoretical simulations.

© 2002 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(270.1670) Quantum optics : Coherent optical effects
(320.0320) Ultrafast optics : Ultrafast optics
(320.5540) Ultrafast optics : Pulse shaping

T. Witte, D. Zeidler, D. Proch, K. L. Kompa, and M. Motzkus, "Programmable amplitude- and phase-modulated femtosecond laser pulses in the mid-infrared," Opt. Lett. 27, 131-133 (2002)

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