Rapidly tunable continuous-wave optical parametric oscillator pumped by a fiber laser |
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Authors: | Klein M E Gross P Boller K J Auerbach M Wessels P Fallnich C |
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Institution: | Nederlands Centrum voor Laser Research, b.v., P.O. Box 2662, 7500 CR Enschede, The Netherlands. m.e.klein@tn.utwente.nl |
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Abstract: | We report on rapid, all-electronically controlled wavelength tuning of a continuous-wave (cw) optical parametric oscillator (OPO) pumped by an ytterbium fiber laser. The OPO is singly resonant for the signal wave and consists of a 40-mm-long periodically poled lithium niobate crystal in a four-mirror ring cavity. By tuning of the fiber-laser wavelength over 33 nm through an intracavity acousto-optic tunable filter, the OPO idler wavelength is tuned from 3160 to 3500 nm in 330 micros, corresponding to an idler frequency-tuning speed of 28 THz/ms. At a fiber-laser power of 6.6 W at 1074 nm, the singly resonant OPO generates 1.13-W cw idler radiation at 3200 nm. |
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