Low-threshold, quasi-cw terahertz parametric amplification in an external ring cavity with an MgO:LiNbO3 Crystal

Shingo Maeda; Tatsuya Ohira; Yuma Takida; Hiroshi Kumagai; Shigeki Nashima

doi:10.1117/12.874333

21 February 2011 Low-threshold, quasi-cw terahertz parametric amplification in an external ring cavity with an MgO:LiNbO₃ Crystal

Shingo Maeda, Tatsuya Ohira, Yuma Takida, Hiroshi Kumagai, Shigeki Nashima

Author Affiliations +

Proceedings Volume 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X; 79171P (2011) https://doi.org/10.1117/12.874333
Event: SPIE LASE, 2011, San Francisco, California, United States

Abstract

The terahertz wave has been attracted recently because of its wide ranging applications in various fields. Since the appearance of a high power near-infrared light source, coherent terahertz waves have been generated successfully using PC antennas, Q-switch Nd:YAG laser or femto second ultrashort pulses laser. Actually, however, there is no tunable and high-reputation terahertz wave source. Then, we have been focusing on picosecond pulsed laser, because picosecond pulsed laser has smaller linewidth than femtosecond pulse and higher-reputation than Q-switch Nd: YAG laser. In addition, picosecond pulses' peak power can be enhanced in a high finesse compact external cavity to overcome the threshold of terahertz parametric generation and oscillation, because the pulse is relatively small spatially, and the spectrum is relatively narrow. Therefore, we developed a terahertz parametric generator with an MgO-doped LiNbO₃(MgO: LN) nonlinear crystal in an external ring cavity for the enhancement. Moreover, the generated idler light was recycled in the ring cavity to provide a contribution to parametric oscillation. As a result, we obtained terahertz wave radiation at high-reputation of 80MHz.

Citation Download Citation

Shingo Maeda, Tatsuya Ohira, Yuma Takida, Hiroshi Kumagai, and Shigeki Nashima "Low-threshold, quasi-cw terahertz parametric amplification in an external ring cavity with an MgO:LiNbO₃ Crystal", Proc. SPIE 7917, Nonlinear Frequency Generation and Conversion: Materials, Devices, and Applications X, 79171P (21 February 2011); https://doi.org/10.1117/12.874333

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
8 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Terahertz radiation

Crystals

Mirrors

Nonlinear crystals

Picosecond phenomena

Silicon

Optical parametric oscillators

Show All Keywords

Keywords/Phrases

Search In:

Publication Years