Detection of coherent tunable THz-wave using of stimulated polariton scattering in MgO:LiNbO<sub>3</sub>

Ruixiang Guo; Tomofumi Ikari; Hiroaki Minamide; Hiromasa Ito

doi:10.1117/12.722990

8 May 2007 Detection of coherent tunable THz-wave using of stimulated polariton scattering in MgO:LiNbO₃

Ruixiang Guo, Tomofumi Ikari, Hiroaki Minamide, Hiromasa Ito

Proceedings Volume 6582, Nonlinear Optics and Applications II; 65820Z (2007) https://doi.org/10.1117/12.722990
Event: International Congress on Optics and Optoelectronics, 2007, Prague, Czech Republic

Abstract

We report the experimental results of generation and coherent detection of narrow linewidth tunable terahertz radiation at room temperature utilizing a difference frequency generation as a result of stimulated scattering in the nonlinear crystal of MgO:LiNbO₃. The terahertz radiation was generated from an all-solid-state tunable injection-seeded THz-wave parametric generator (is-TPG), which emits the monochromatic THz-wave over a wide tunable frequency range from 0.6 THz to 2.4 THz with the linewidth of narrower than 100 MHz. Mixing of terahertz radiation (frequency &ohgr;_T ) with a near-infrared intense pump pulse (frequency &ohgr;_P ) results in the excitation and amplification of the difference frequency component with frequency &ohgr;_i =&ohgr;_P -&ohgr;_T, which is detected with a InGaAsbased photodiode. We demonstrate this method a fast response and very sensitive THz-wave detection running at room temperature, which is at least three of magnitude faster and two of magnitude more sensitive than a typical Liquid-He cooling Si bolometer for detecting the quasi-cw THz-wave beam. This detection technique is possible for coherent detection, it can measure the THz electric field, not only the intensity. As a result, the phase information is preserved, the real and imaginary parts of a sample's dielectric function may be determined simultaneously with this detection.

Citation Download Citation

Ruixiang Guo, Tomofumi Ikari, Hiroaki Minamide, and Hiromasa Ito "Detection of coherent tunable THz-wave using of stimulated polariton scattering in MgO:LiNbO₃", Proc. SPIE 6582, Nonlinear Optics and Applications II, 65820Z (8 May 2007); https://doi.org/10.1117/12.722990

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available