Chinese Optics Letters, 2004, 2 (11): 11664, Published Online: Jun. 6, 2006
Theoretical study of quasi-phase-matching fourth harmonic generation in periodically poled lithium tantalate 
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Abstract
The direct fourth harmonic generation (FHG) is theoretically demonstrated based on quasi-phase-matching (QPM) configuration in periodically poled lithium tantalate (PPLT). The wavelength dependence of the period of FHG QPM gratings is calculated. Bandwidths of fundamental wavelength, temperature, and incident angle are also studied. A very wide bandwidth, as large as 119.5 nm, of fundamental wavelength near 3699 nm is found with the QPM period of 9.442 μm and the crystal length of 1 cm.
Wei Xie, Xianfeng Chen, Like He, Yuping Chen, Yuxing Xia. Theoretical study of quasi-phase-matching fourth harmonic generation in periodically poled lithium tantalate[J]. Chinese Optics Letters, 2004, 2(11): 11664.
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