Suppression of FM-to-AM conversion in third-harmonic generation at the retracing point of a crystal.
FM-to-AM conversion can cause many negative effects (e.g., reducing of margin against damage to the optics) on the performance of a third-harmonic conversion system. In this Letter, the FM-to-AM conversion effect in third-harmonic generation is investigated both at and away from the retracing point of Type II potassium dihydrogen phosphate crystal. Obtained results indicate that the FM-to-AM conversion can be suppressed effectively when the crystal works at the retracing point.
Yang
Yisheng
Y
College of Science, National University of Defense Technology, Changsha 410073, China. ysyang@nudt.edu.cn
Feng
Bin
B
Han
Wei
W
Zheng
Wanguo
W
Li
Fuquan
F
Tan
Jichun
J