Abstract
Disordered laser crystals are well known in last years for advantages to produce short pulse laser in particular Yb doped systems [1] and recently in Nd doped systems [2-3]. In this work we present the results in four different laser cavities: hemispherical, 3-fold mirrors, and 4 –fold mirrors pumped with Ti-Sapphire (up to 4 W) and diode laser (up to 20 W), for two isomorphic disordered laser crystals, KLa(WO4)2:Nd3+ (KLW) and KLa(MoO4)2:Nd3+ (KLM). KLW crystal was grown in air by top-seeded solution growth technique and KLM was grown by Czochralski technique. Details about crystal growth, structure, and optical spectroscopy will be summarized in presentation. In previous work [4], we study the 1 μm laser emission of the 4F3/2 ➔ 4I11/2 transition and we observed some fluctuations in laser wavelengths but very smooth. However in this case we study in particular the potential effect of W or Mo ions in crystals with higher disorder than NaLa(WO4)2 respect to the laser tunability and output power in several laser configurations. In particular, we could summarize that KLW crystals offer a higher tunable range respect to KLM and KLM crystals present a higher output power than KLW crystals, in both cases laser threshold are very low around a few mW between 3 to 5 mW depending on the laser crystal.
© 2013 IEEE
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