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17 February 2010 A design for a 100kW rotary disk laser oscillator with good beam quality
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In this paper, I present quantitative designs of 25-kW and 100-kW laser oscillators containing a number of Yb-ceramic YAG rotary disk laser generators. A design of an unstable resonator for the 100- kW laser is also presented. The design is modular, with identical Yb-YAG rotary disk laser generators stacked in series in a laser oscillator. Each rotary disk laser generator is identically pumped and cooled. The calculations for one design example shows that with a 10-disk laser oscillator, 100-kW of laser power may be extracted from an unstable resonator of magnification 3 at 46% optical efficiency and 53% slope efficiency. Assuming 60% efficient laser diodes will be possible in the near future, the 100-kW rotary disk laser design will require 367 kW of electrical power to produce 65 kW of power in a far-field bucket of angular radius 1.5 λ/D.
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Santanu Basu "A design for a 100kW rotary disk laser oscillator with good beam quality", Proc. SPIE 7578, Solid State Lasers XIX: Technology and Devices, 75780D (17 February 2010);


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