Diode-pumped Nd:LNA as a pulsed amplifier

Alain Jolly; H. Coic; Ph. Maruenda; P. Estraillier; Claude Rouyer; Rene Bailly-Salins; Jacques Luce

doi:10.1117/12.228301

8 December 1995 Diode-pumped Nd:LNA as a pulsed amplifier

Alain Jolly, H. Coic, Ph. Maruenda, P. Estraillier, Claude Rouyer, Rene Bailly-Salins, Jacques Luce

Proceedings Volume 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF); (1995) https://doi.org/10.1117/12.228301
Event: Solid State Lasers for Application to Inertial Confinement Fusion (ICF), 1995, Monterey, CA, United States

Abstract

We describe the performances we obtained in a variety of high power diode pumped Nd³⁺:LNA heads. Two pumping structures are analyzed, which were designed for cylindrical and square cross section rods. The cylindrical rods are tested with 1 joule pumping energy during 200 microsecond(s) . They provide high regenerative gains, in the range 10⁷ to 10⁸ at 20 mJ output energy, with less than 20 passes. The gain transverse distribution looks like a nonuniform cross distribution, at the opposite of that obtained with the square head. The central volume in the rod, whose diameter typically equals 2 mm, only participates to amplification. The purpose of the square structure is both to solve this problem and to optimize the temperature behavior at 10 Hz. Preliminary results are given. In a last step, we also present some spatio-temporal computations in order to understand the growth of the amplified beam as a function of the number of passes in the rod.

Citation Download Citation

Alain Jolly, H. Coic, Ph. Maruenda, P. Estraillier, Claude Rouyer, Rene Bailly-Salins, and Jacques Luce "Diode-pumped Nd:LNA as a pulsed amplifier", Proc. SPIE 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF), (8 December 1995); https://doi.org/10.1117/12.228301

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