Development of an ultra-widely tunable DFG-THz source with switching between organic nonlinear crystals pumped with a dual-wavelength BBO optical parametric oscillator

Takashi Notake; Kouji Nawata; Hiroshi Kawamata; Takeshi Matsukawa; Feng Qi; Hiroaki Minamide

doi:10.1364/OE.20.025850

Development of an ultra-widely tunable DFG-THz source with switching between organic nonlinear crystals pumped with a dual-wavelength BBO optical parametric oscillator

Opt Express. 2012 Nov 5;20(23):25850-7. doi: 10.1364/OE.20.025850.

Authors

Takashi Notake¹, Kouji Nawata, Hiroshi Kawamata, Takeshi Matsukawa, Feng Qi, Hiroaki Minamide

Affiliation

¹ Tera-photonics laboratory, RIKEN ASI, 519-1399, Aramaki-Aoba, Sendai 980-0845, Japan. notake@riken.jp

PMID: 23187402
DOI: 10.1364/OE.20.025850

Abstract

We developed a difference frequency generation (DFG) source with an organic nonlinear optical crystal of DAST or BNA selectively excited by a dual-wavelength β-BaB(2)O(4) optical parametric oscillator (BBO-OPO). The dual-wavelength BBO-OPO can independently oscillate two lights with different wavelengths from 800 to 1800 nm in a cavity. THz-wave generation by using each organic crystal covers ultrawide range from 1 to 30 THz with inherent intensity dips by crystal absorption modes. The reduced outputs can be improved by switching over the crystals with adequately tuned pump wavelengths of the BBO-OPO.

Publication types

Research Support, Non-U.S. Gov't