Abstract
A novel design for a contact grating device with an incorporated Fabry–Perot resonator is proposed for high-power terahertz (THz) light generation. We deposited a multilayer consisting of and on a magnesium-doped stoichiometric substrate and fabricated grating grooves on the outermost layer. The multilayer was designed such that conditions for a Fabry–Perot resonator were satisfied for light diffracted by the grating. Consequently, the fraction of light transmitted into the substrate, i.e., the diffraction efficiency, was enhanced by the resonator. The diffraction efficiency of the fabricated device was 71%, which is close to the calculated value of 78% from the optimized design. THz light generation was also demonstrated with the contact grating device. The THz output of 0.41 μJ was obtained using near-infrared pump light of 2.7 mJ.
© 2014 Optical Society of America
Full Article | PDF ArticleMore Like This
Borislav Vasić and Radoš Gajić
Opt. Lett. 39(21) 6253-6256 (2014)
Michael I. Bakunov and Sergey B. Bodrov
J. Opt. Soc. Am. B 31(11) 2549-2557 (2014)
Anton A. Ryzhov, Inna M. Belousova, Yanzhi Wang, Hongji Qi, and Jun Wang
Opt. Lett. 39(16) 4847-4850 (2014)