Low-threshold, narrow-line THz-wave parametric oscillator with an intra-cavity grazing-incidence grating | Zendy

T D Wang | Zendy; Y. Y. Lin | Zendy; S Y Chen | Zendy; A. C. Chiang | Zendy; Shou-Tai Lin | Zendy; Yen-Chieh Huang | Zendy

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Low-threshold, narrow-line THz-wave parametric oscillator with an intra-cavity grazing-incidence grating

Author(s) -

T D Wang,

Y. Y. Lin,

S Y Chen,

A. C. Chiang,

Shou-Tai Lin,

Yen-Chieh Huang

Publication year - 2008

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.16.012571

Subject(s) - optics , grating , materials science , optical parametric oscillator , lithium niobate , terahertz radiation , parametric oscillator , laser , waveguide , optoelectronics , physics

We report a low-threshold, narrow-line THz-wave parametric oscillator with an intra-cavity grazing-incidence grating and a 1-mm thick, 45-mm long lithium-niobate planar waveguide. When pumped by an actively Q-switched Nd:YAG laser, the threshold energy and intensity of the parametric oscillator were about 2.2 mJ and 70 MW/cm(2), respectively. The linewidths of the output THz wave were 12 and 134 GHz with and without the intra-cavity grating, respectively.

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