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Tsubouchi M, Nagashima K, Yoshida F, et al. Contact grating device with Fabry-Perot resonator for effective terahertz light generation. Opt Lett. 2014;39(18):5439-42doi: 10.1364/OL.39.005439.
Tsubouchi, M., Nagashima, K., Yoshida, F., Ochi, Y., & Maruyama, M. (2014). Contact grating device with Fabry-Perot resonator for effective terahertz light generation. Optics letters, 39(18), 5439-42. https://doi.org/10.1364/OL.39.005439
Tsubouchi, Masaaki, et al. "Contact grating device with Fabry-Perot resonator for effective terahertz light generation." Optics letters vol. 39,18 (2014): 5439-42. doi: https://doi.org/10.1364/OL.39.005439
Tsubouchi M, Nagashima K, Yoshida F, Ochi Y, Maruyama M. Contact grating device with Fabry-Perot resonator for effective terahertz light generation. Opt Lett. 2014 Sep 15;39(18):5439-42. doi: 10.1364/OL.39.005439. PMID: 26466292.
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Opt Lett. 2014 Sep 15;39(18):5439-42. doi: 10.1364/OL.39.005439.

Contact grating device with Fabry-Perot resonator for effective terahertz light generation.

Optics letters

Masaaki Tsubouchi, Keisuke Nagashima, Fumiko Yoshida, Yoshihiro Ochi, Momoko Maruyama

PMID: 26466292 DOI: 10.1364/OL.39.005439

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 Ta(2)O(5) and Al(2)O(3) on a magnesium-doped stoichiometric LiNbO(3) 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 LiNbO(3) 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.

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