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Proceedings Paper

Narrowing of oscillation linewidth in a quasi-monolithic THz-wave parametric oscillator
Author(s): Hiroaki Minamide; Ruixiang Guo; Tomofumi Ikari; Hiromasa Ito
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Paper Abstract

We have demonstrated a quasi-monolithic THz-wave parametric oscillator (TPO) to confer more stability, a lower threshold, and more compact size on THz-wave generating devices. In this report, we describe narrow linewidth generation in a quasi-monolithic TPO. The cavity configuration was designed so that the noncollinear phase-matching condition was satisfied in the crystal. A 5 mol% MgO:LiNbO3 crystal within dimensions of 15 mm × 20 mm with three surfaces for total reflection was used as a nonlinear optical crystal. The quasi-monolithic TPO in a ring-cavity configuration consisted of a nonlinear optical crystal and a super-mirror that reflected the idler beam (&lgr; > ca. 1067 nm) and transmitted the pump beam (1064 nm). We obtained narrow oscillation linewidth of < 760 MHz at 1.6 THz of THz-wave radiation. The low threshold of the oscillation was around 5.4 mJ/pulse.

Paper Details

Date Published: 8 May 2007
PDF: 8 pages
Proc. SPIE 6582, Nonlinear Optics and Applications II, 65820Y (8 May 2007); doi: 10.1117/12.722976
Show Author Affiliations
Hiroaki Minamide, RIKEN Sendai (Japan)
Ruixiang Guo, RIKEN Sendai (Japan)
Tomofumi Ikari, RIKEN Sendai (Japan)
Hiromasa Ito, RIKEN Sendai (Japan)
RIEC Tohoku Univ. (Japan)

Published in SPIE Proceedings Vol. 6582:
Nonlinear Optics and Applications II
Mario Bertolotti, Editor(s)

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