G. Salamu, A. Ionescu, C. A. Brandus, O. Sandu, N. Pavel*, and T. Dascalu
Laboratory of Solid-State Quantum Electronics, National Institute for Laser, Plasma and Radiation Physics,
Bucharest R-077125, Romania
*e-mail: nicolaie.pavel@inflpr.ro
Received June 24, 2011; in final form, June 27, 2011; published online October 24, 2011
Abstract—Output performances of passively Q-switched, composite Nd:YAG/Cr4+:YAG lasers that consisted
of bonded, all-poly-crystalline ceramics Nd:YAG and Cr4+:YAG are reported. Laser pulses at 1.06 
m with 2.5-
mJ energy and 1.9-MW peak power are obtained from a 1.1-at % Nd:YAG/Cr4+:YAG ceramics that was quasi-
continuous-wave (quasi-CW) pumped with a diode laser. Single-pass frequency doubling with LiB3O5 (LBO)
nonlinear crystal at room temperature yielded green laser pulses at 532 nm of 0.36-mJ energy and 0.3-MW peak
power, with a conversion efficiency of 0.27.
DOI: 10.1134/S1054660X11230150
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