High power Nd:YAG spinning disk laser | Zendy

Andrew P. Ongstad | Zendy; Matthew R. Guy | Zendy; J. R. Chavez | Zendy

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High power Nd:YAG spinning disk laser

Author(s) -

Andrew P. Ongstad,

Matthew R. Guy,

J. R. Chavez

Publication year - 2016

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.24.000108

Subject(s) - materials science , optics , laser , diode , spinning , optoelectronics , energy conversion efficiency , physics , composite material

We report on a high power Nd:YAG spinning disk laser. The eight cm diameter disk generated 200 W CW output with 323 W of absorbed pump in a near diffraction-limited beam. The power conversion efficiency was 64%. The pulsed result, 5 ms pulses at 10 Hz PRF, was nearly identical to the CW result indicating good thermal management. Rotated at 1200-1800 RPM with He impingement cooling the disk temperature increased by only 17 °C reaching a maximum temperature of ~31 °C. The thermal dissipation per unit of output power was 0.61 watt of heat generated per watt of laser output, which is below the typical range of 0.8-1.1 for 808 nm diode pumped Nd:YAG lasers.

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