We efficiently generated far-infrared radiation at the wavelengths centered at 20.8 μm in the vicinity of one of the polariton resonances of lithium niobate. Such an efficient nonlinear conversion is made possible by exploiting phase matching for difference-frequency generation in lithium niobate. The highest peak power reached 233 W.
© 2012 Optical Society of America
Original Manuscript: July 4, 2012
Revised Manuscript: July 28, 2012
Manuscript Accepted: August 2, 2012
Published: August 29, 2012
Xiaomu Lin, Lei Wang, and Yujie J. Ding, "Efficient generation of far-infrared radiation in the vicinity of polariton resonance of lithium niobate," Opt. Lett. 37, 3687-3689 (2012)