Open AccessExperimental research on frequency doubling in periodically poled KTiOPO4 waveguide fabricated by femtosecond laser
Author(s) -
Jue Wang,
Chenghou Tu,
Shuanggen Zhang,
Lyu Fu-Yun
Publication year - 2010
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.59.307
Subject(s) - femtosecond , materials science , fabrication , waveguide , laser , optics , quasi phase matching , wavelength , second harmonic generation , optoelectronics , femtosecond pulse , phase matching , lithium niobate , harmonic , physics , medicine , alternative medicine , pathology , quantum mechanics
We present in this paper the fabrication and characterization of type II waveguide in c-cut periodically poled KTiOPO4 crystal. The waveguide was fabricated by using a femtosecond laserand the fabrication process was optimized. In our experiments single mode propagation was observed at optimal waveguide width of 145 μm and quasi-phase matching wavelength of 1064 nm. The second-harmonic conversion efficiency of 398% can be achieved.