Efficient diode-pumped Nd:KGW laser grown by top nucleated floating crystal method: Part II

Yehoshua Y. Kalisky; Leonid Kravchik; Georges Boulon; G. Metrat; Alain Brenier; Milan R. Kokta

doi:10.1117/12.529371

8 July 2004 Efficient diode-pumped Nd:KGW laser grown by top nucleated floating crystal method: Part II

Yehoshua Y. Kalisky, Leonid Kravchik, Georges Boulon, G. Metrat, Alain Brenier, Milan R. Kokta

Proceedings Volume 5332, Solid State Lasers XIII: Technology and Devices; (2004) https://doi.org/10.1117/12.529371
Event: Lasers and Applications in Science and Engineering, 2004, San Jose, Ca, United States

Abstract

Diode pumping of a laser-stress-free, Nd( 5 % at.):KGW, grown by top nucleated floating crystal (TNFC) method, is presented. The diode-pumped laser was operated both in the free-running and passively Q-switched operating modes. Under optimized conditions of resonator and optics, the Nd:KGW disk (1.3 mm in thickness), produced at room temperature an efficient free-running, TEM00 output with maximum power of 0.4-W, with 75 % slope efficiency and 51 % total laser efficiency. Under slightly different experimental conditions the laser was passively Q-switched by using Cr⁴⁺:YAG as saturable absorber. The passively Q-switched laser produced modulated pulses at average frequencies in the range of 10-20 kHz, with pulsewidth of ≈180 nsec, with an average output power obtained was 30 mW at the maximumpumping power level. The results presented here indicate the potential Nd:KGW crystals grown by TNFC growth method, as candidates for concentrated, stress free diode pumped microlasers in a large variety of wavelengths, including the eye-safe range.

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Yehoshua Y. Kalisky, Leonid Kravchik, Georges Boulon, G. Metrat, Alain Brenier, and Milan R. Kokta "Efficient diode-pumped Nd:KGW laser grown by top nucleated floating crystal method: Part II", Proc. SPIE 5332, Solid State Lasers XIII: Technology and Devices, (8 July 2004); https://doi.org/10.1117/12.529371

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