Journal
LASER PHYSICS
Volume 25, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1054-660X/25/1/015804
Keywords
ReCOB; SHG; NCPM; nonlinear materials; nonlinear optics
Categories
Funding
- National Natural Science Foundation of China [51202129, 61178060, 91022034]
- Program for New Century Excellent Talents in University [NCET-10-0552]
- Independent Innovation Foundation of Shandong University [2012TS215, 2011GN056]
- Natural Science Foundation of Shandong Province [ZR2012EMQ004]
- Natural Science Foundation for Distinguished Young Scholar of Shandong Province [JQ201218]
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The 1064 nm optimal spatial phase matching (PM) direction for LaCa4O(BO3)(3) (LaCOB) crystals was found to be (113.5 degrees, 43.8 degrees) with d(eff) of 1.34 pm V-1, angular acceptance of 0.9 mrad cm and walk-off angle of 14.9 mrad, and more than a 56% second-harmonic generation (SHG) conversion efficiency was realized on a sample (4 x 4 x 6 mm(3)) cut in this direction, by using a 1064 nm Nd : YAG pico-second laser. The angular noncritical phase-matching (A-NCPM) wavelengths along the y and z axes for LaxGd1-xCOB (x = 0.09, 0.13) crystals were measured. Using a nanosecond laser, the type-I single-pass A-NCPM SHG conversion efficiency along y axis reached 30.2% by taking advantage of the longer crystal sample (4 x 4 x 27 mm(3)).
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