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

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

A novel design for a contact grating device with an incorporated Fabry-Perot resonator is proposed for high-power terahertz light (THz) 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 diffraction efficiency was enhanced by the resonator. The diffraction efficiency of the fabricated device was 71%. THz light generation was also demonstrated with the contact grating device.

Language	:	English
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Meeting title	:	4th Advanced Lasers and Photon Sources Conference (ALPS '15)
Held date	:	2015/04
Location (city)	:	Yokohama
Location (country)	:	Japan
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Keywords	:	no keyword
Research Facility	:	Tキューブレーザー施設
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Cooperating Institute	:	文部科学省

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Registration No. : BB20143339
JAEA Abstracts No. :
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