Open AccessWatt-level self-frequency-doubling Nd:GdCOB lasers
Author(s) -
Jing Wang,
Huaijin Zhang,
Zhengping Wang,
Haohai Yu,
Nan Zong,
Chunchi Ma,
Zuyan Xu,
Minhua Jiang
Publication year - 2010
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.18.011058
Subject(s) - laser , optics , energy conversion efficiency , materials science , watt , wavelength , semiconductor laser theory , diode , continuous wave , power (physics) , optoelectronics , physics , quantum mechanics
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:LnCa4O(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.