Abstract
We demonstrated a cw side pumped Nd:YVO4. laser with high power output and a improvement in beam quality. With one pass we demonstrated 63% optical‐to‐optical conversion efficiency, 74% slope efficiency and 22 watts output power in multimode, for a pump power of 34, 9 watt. With the double pass configuration we achieved 17 watts, for a pump power of 45 watts, with M2 of 3.4×3.8 in the horizontal and vertical directions, respectively. We verified the threshold for fundamental and higher‐order modes with different resonators. Through simulations we showed a configuration with fundamental mode with a pump power higher than 400 watts.
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