High-power diode-pumped Nd:Lu2O3 crystal continuouswave thin-disk laser at 1359 nm

Abstract

We present for the first time, to the best of our knowledge, a 1359 nm continuous‐wave (CW) Nd:Lu2O3 laser based on the 4F5/2 – 4F13/2 transition. The use of a pump module with 16 passes through the crystal allowed the realization of a Nd:Lu2O3 thin‐disk laser with 3.52 W of CW output power. The slope efficiency with respect to the incident pump power was 21.4%, and the fluctuation of the output power was better than 3.55% in the given 2 hour. The beam quality factor M2 is 1.14 and 1.18 for tangential direction and sagittal direction, respectively. (© 2012 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA) (© 2011 by Astro Ltd., Published exclusively by WILEY‐VCH Verlag GmbH & Co. KGaA)

Nd3+-doped Lu2O3 transparent sesquioxide ceramics elaborated by the Spark Plasma Sintering (SPS) method. Part 2: First laser output results and comparison with Nd3+-doped Lu2O3 and Nd3+-Y2O3 ceramics elaborated by a conventional method

“…4 I 13/2 transition of Nd 3+ ions [3]. High slope efficiency of 21.4% and a maximum output power of 3.52 W were achieved while the incident pump power was 18.5 W. Another recent paper confirms the interest of Nd 3+ -doped Lu 2 O 3 laser crystal [4]. The laser was found to be dual-wavelength at 1076 and 1080 nm oscillating simultaneously.…”

“…While the lifetime in a 1% Nd 3+ -doped Lu 2 O 3 crystal is 286 ls [3] and those in a 0.15% Nd 3+ -doped Lu 2 O 3 ceramic is 300 ls [4], in the 1% Nd 3+ -doped Lu 2 O 3 ceramic fabricated by SPS the lifetime is only 152 ls. As an example, we have especially shown the high value of the emission cross-sections of 1% Nd 3+ (6 Â 10 À20 cm 2 measured by Fuchtbauer-Ladenburg formula with a lifetime of corresponding to the expected 4 F 3/2 ?…”

Optical Crystals for 1.3 μm All-Solid-State Passively Q-Switched Laser

“…Several other types of optical crystals can also emit a 1.3 µm laser, such as: Nd:Lu 2 O 3 [132,133] and Nd,Cr:YAG [33,134]. Here, we introduce only the main types.…”