128 mJ/Pulse, Laser-Diode-Pumped, Q-Switched Tm:YAG Laser

We demonstrated a high-pulse-energy, laser-diode-pumped Tm:YAG laser in AO Q-switched operation. In laser experiments, we introduced a composite-type Tm:YAG laser rod with undoped endcaps. The rod was pumped by 785-nm quasi-continuous-wave laser diodes in a side-pumping configuration. To obtain a hi...

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Veröffentlicht in:	IEEE journal of selected topics in quantum electronics 2015-01, Vol.21 (1), p.364-368
Hauptverfasser:	Yumoto, Masaki, Saito, Norihito, Urata, Yoshiharu, Wada, Satoshi
Format:	Artikel
Sprache:	eng
Schlagworte:	Arrays Beams (radiation) Energy use Laser beams Laser cavities Laser cavity resonators Laser excitation Laser modes Lasers Oscillators Pump lasers Quantum electronics Slopes
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Beschreibung
Zusammenfassung:	We demonstrated a high-pulse-energy, laser-diode-pumped Tm:YAG laser in AO Q-switched operation. In laser experiments, we introduced a composite-type Tm:YAG laser rod with undoped endcaps. The rod was pumped by 785-nm quasi-continuous-wave laser diodes in a side-pumping configuration. To obtain a high energy and high beam quality, we designed a Tm:YAG laser cavity utilizing the thermal lens effect of the laser rod. A Q-switched output energy of 128 mJ at 10 Hz with a pulse width of 160 ns was obtained from the laser oscillator at room temperature, and the slope efficiency reached 14%. A high beam quality in the TEM 00 mode was also realized.
ISSN:	1077-260X 1558-4542
DOI:	10.1109/JSTQE.2014.2338872