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Resonant total-internal-reflection diode pumping of Q-switched 1.64 μm Er3+:YAG laser with a crystalline fiber-like geometry is reported with ~10 W in cw-mode and 2.8 mJ in Q-switched mode.
For high-power lasers the requirements on the thermo-mechanical properties of the host material increase, demanding for a high heat transfer coefficient and good mechanical strength of the host medium. Compared to the well established YAG crystal, the Lu2O3 crystal has a better heat transfer coefficient and a good mechanical strength, making this host interesting for high-power laser application....
We present experimental results on TIR-pumped Q-switched Tm3+:YAG lasers pumped at 804 nm. Up to 5.6 mJ pulse energy is achieved (25.9 kW peak power at 216 ns pulse width).
A theoretical model is presented describing continuous-wave operation of diode-end-pumped Er3+ :YAG lasers. Implemented as a numerical computer model it takes into account the full spectral information of the pump and laser transitions as well as all important ionic levels, their Stark splitting, decay schemes, up-conversion processes, excited-state absorption and especially the thermal dependencies...
An efficient OP-GaAs OPO pumped by a high repetition rate (20-50 kHz) Q-switched Ho:YAG laser is presented. The slope efficiency is 53% at 20 kHz. Influence of pump polarization on OPO performance is tested.
We present spectroscopic results on Er:YAG at 300 K-550 K with respect to resonant pump absorption at 1.53 mum and laser emission at 1.61 mum and 1.64 mum and numerical results on laser performance.
Highly efficient cw (49 % opt.-opt., 20 W) and Q-switched (9 W average) Tm:ZBLAN fiber lasers are reported. Used for pumping Cr2+:ZnSe, 65 ns gain-switched pulses were achieved around 2.3 mum (1 W average).
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