LED-pumped Nd:YAG laser: frequency conversion from visible to mid-infrared region

Kai-Lun Hsu¹, Chun-Yu Cho^1*, Yin-Pei Chen², Kuan-Wei Su²

¹Electro Optical Engineering, National United University, Miaoli, Taiwan
²Electrophysics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan

* Presenter:Chun-Yu Cho, email:chunyucho@nuu.edu.tw

An LED-pumped passively Q-switched Nd:YAG laser is demonstrated to achieve mJ output pulse energy and ns pulse width. The progress of the LED module design is discussed. The laser can be successfully applied for nonlinear frequency conversion from visible to mid-infrared region via second harmonic generation and optical parametric oscillation.

Keywords: LED, Solid-state laser, Nonlinear frequency conversion, Mid-infrared