arXiv subjects

Jichun Tan

Publications and source records attributed to Jichun Tan.

2 recordsLinked to original sources

arXiv2011

Suppression of FM-to-AM conversion in third-harmonic generation by tuning the ratio of modulation depth

Issues of Frequency-to-Amplitude modulation (FM-to-AM) conversion occurred in phase-modulated third-harmonic generation (THG) process are investigated. An expression about group-velocity is theoretically derived to suppress the FM-to-AM conversion, which appears to be dependant on the ratio of modulation depth of fundamental to second-harmonic when given the same modulation frequencies of them. Simulation results indicate that the induced AM in THG process can be suppressed effectively when the expression about group-velocity is satisfied.

physics.optics↗

arXiv2011

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, and etc.) on performances of 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 KDP crystal. Obtained results indicate that the FM-to-AM conversion can be suppressed effectively when the crystal works at the retracing point.

physics.optics↗