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Proceedings Paper

Efficient generation of record-short and record-long wavelengths based on backward and forward parametric interaction in lithium niobate
Author(s): Ruolin Chen; Guan Sun; Xiaomu Lin; Yujie J. Ding
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Paper Abstract

In our recent work, we have generated the shortest wavelengths from periodically-poled lithium niobate (PPLN) in the vicinity of 62.5 microns at the poling period of 7.1 microns. We have demonstrated large enhancements in the output powers from three gratings. For the long-poling periods, we have generated THz radiation with output wavelengths in the range of 126-1382 μm and output powers as high as 432 μW, corresponding to the photon conversion efficiency of 29%. We have also efficiently generated far-infrared radiation at the wavelengths centered at 20.8 microns 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. These wavelengths correspond to the shortest wavelength in the terahertz region and longest wavelength in the mid-infrared/far-infrared regions from lithium niobate, respectively.

Paper Details

Date Published: 14 March 2013
PDF: 11 pages
Proc. SPIE 8623, Ultrafast Phenomena and Nanophotonics XVII, 862317 (14 March 2013); doi: 10.1117/12.2001034
Show Author Affiliations
Ruolin Chen, Lehigh Univ. (United States)
Guan Sun, Lehigh Univ. (United States)
Xiaomu Lin, Lehigh Univ. (United States)
Yujie J. Ding, Lehigh Univ. (United States)

Published in SPIE Proceedings Vol. 8623:
Ultrafast Phenomena and Nanophotonics XVII
Markus Betz; Abdulhakem Y. Elezzabi; Jin-Joo Song; Kong-Thon Tsen, Editor(s)

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