增益介质位置对腔外倍频效率的影响

Translated title of the contribution: Effect of the gain medium position on the external second harmonic generation conversion efficiency

Jiaqi Li, Guoying Feng*, Guoliang Deng, Yongfu Chen, Shouhuan Zhou

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of the gain medium position in the resonator on the external second harmonic generation (SHG) conversion efficiency was studied. A MgO-doped periodically poled LiNbO 3 crystal (MgO:PPLN) was utilized to achieve a 532-nm green-light laser outside the resonator of a mode-locked diode-pumped Nd:YVO 4 1064-nm laser. We theoretically and experimentally verified that increasing the mirror/crystal separation could reduce the longitudinal mode number, narrow the linewidth and stabilize the mode locked pulse owing to the spatial burning hole effect. These phenomena would further affect the SHG conversion efficiency.The experimental results show that, increasing the mirror/crystal separation could promote the SHG conversion efficiency with the fixed focus length, especially at the higher pump power. The theoretical analysis and experimental results have reference significance for improving the SHG efficiency of the external end-pumped mode-locked laser.

Translated title of the contributionEffect of the gain medium position on the external second harmonic generation conversion efficiency
Original languageChinese (Traditional)
Article number041002
JournalQiangjiguang Yu Lizishu/High Power Laser and Particle Beams
Volume30
Issue number4
DOIs
StatePublished - 1 Apr 2018

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