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为了在低抽运功率时能产生高效二次谐波振荡,英格兰南安普顿大学的研究人员已把一层由周期极化铌酸锂(PPLN;LiNbO3)做成的波导埋置在钽酸锂(LiTaO3)中。他们选择LiTaO3作衬底和包层,是由于其折射率低于LiNbO3,LiTaO3的热特性也很适合退火要求。在320°C下直接粘合的精细抛...
To produce efficient second harmonic oscillation at low pumping power, researchers at the University of Southampton in England have embedded a waveguide made of periodically poled lithium niobate (PPLN; LiNbO3) in lithium tantalate (LiTaO3). They chose LiTaO3 for substrate and cladding due to their lower refractive index than LiNbO3 and the thermal properties of LiTaO3 are also well suited for annealing requirements. Directly bonded at 320 ° C fine polishing ...