Open AccessTHz-wave parametric oscillator with a surface-emitted configuration
Author(s) -
Tomofumi Ikari,
Xianbin Zhang,
Hiroaki Minamide,
Hiromasa Ito
Publication year - 2006
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.14.001604
Subject(s) - terahertz radiation , optics , optical parametric oscillator , parametric oscillator , surface wave , perpendicular , physics , crystal (programming language) , materials science , laser , geometry , mathematics , computer science , programming language
We propose a surface-emitted cavity configuration for a terahertz-wave parametric oscillator that allows THz wave emission perpendicular to the crystal surface without any output coupler. The oscillating idler and pump waves are reflected at the surface of a nonlinear crystal in a single resonance cavity, satisfying the noncollinear phasematching condition. The radiated THz wave has a Gaussian profile. The measured beam quality factors (M(2)) were 1.15 and 1.25 in the horizontal and vertical directions, respectively. The measured tunable range was 0.8-2.74 THz. A test of transmission imaging using a test pattern was demonstrated.