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Injection-locked single-frequency laser with an output power of 220 W


A solid-state laser system for the next generation of gravitational wave detectors with an output power of 220 W at the wavelength of 1064 nm is presented. Single-frequency operation of the laser was achieved by injection-locking of a high-power ring oscillator to an amplified non-planar ring oscillator (NPRO) following the Pound–Drever–Hall scheme. The high-power stage which features four longitudinally pumped Nd:YAG laser crystals as active media in a ring resonator configuration was designed for reliable long term operation. Using a non-confocal ring cavity to filter the output beam, a pure TEM00 mode with 168 W output power was obtained.

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Correspondence to L. Winkelmann.

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Winkelmann, L., Puncken, O., Kluzik, R. et al. Injection-locked single-frequency laser with an output power of 220 W. Appl. Phys. B 102, 529–538 (2011).

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  • Output Power
  • Pump Power
  • High Order Mode
  • Thermal Lens
  • Laser Crystal