Article

Generation of extended pulse trains of minimum duration by passive negative feedback applied to solid-state Q-switched lasers

Antonio AgnesiDepartment of Electronics, University of Pavia, Pavia, ItalyA. Del CornoDepartment of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USAP. Di TrapaniDepartment of Electronics, University of Pavia, Pavia, ItalyManlio F. FoglianiG. RealiDepartment of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USAJ.-C. DielsDepartment of Electronics, University of Pavia, Pavia, ItalyCheng-Chang YehDepartment of Electronics, University of Pavia, Pavia, ItalyXin ZhaoDepartment of Physics and Astronomy, University of New Mexico, Albuquerque, NM, USAVáclav Kubeček

1992en

ABI

Abstract

Intracavity self-focusing in a thin two-photon absorber acts, in combination with pinholes, as an efficient power and energy limiter in flashlamp (pulsed) and arc lamp (CW) pumped actively passively mode-locked crystalline Nd-doped lasers. Power limiting by the intracavity two-photon absorber is exploited to create the condition for optimum pulse compression in the saturable absorber. Additional pulse shortening is due to the elimination of the pulse tail by self-defocusing in the nonlinear crystal. Extracavity and intracavity measurements, as well as three-dimensional computer simulations, give a complete understanding of the pulse evolution in the cavity, including the two mechanisms of pulse shaping and compression.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>

Identifiers

DOI: 10.1109/3.124996

Citations and references

Cited by 70 references

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