Journal
OPTICS EXPRESS
Volume 18, Issue 11, Pages 11058-11062Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.18.011058
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Funding
- National Natural Science Foundation of China [50721002, 50590401/E01]
- Grant for State Key Program of China [2010CB630702]
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Laser-diode (LD) pumped self-frequency doubling (SFD) Nd:GdCa4O(BO3)(3) (Nd:GdCOB) miniature laser was demonstrated. The output power as high as 1.35 W was achieved which is over than five times than previous values for Nd:LnCa(4)O(BO3)(3) (Ln = Y or Gd) SFD lasers and becomes the highest continuous-wave output power in this field to our knowledge. The maximum optical conversion efficiency is 17%. By comparison, we found that the cutting direction along its optimal phase-matching direction out of the principal planes is the determining factor resulting in this watt-level efficient output power. Different with previous studies, the emission wavelength is centered at about 545 nm. We believed that this efficient laser will become the most competitive one in the existing commercial green lasers, especially in the laser display, medical treatment and spectroscopic analysis etc. (C) 2010 Optical Society of America
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