title: Widely tunable terahertz-wave generation using an N-benzyl-2-methyl-4-nitroaniline crystal.
abstract: Widely tunable terahertz (THz)-wave generation using difference frequency generation (DFG) in an organic N-benzyl-2-methyl-4-nitroaniline (BNA) crystal was demonstrated. To our knowledge, this is the first report of THz-wave generation by BNA DFG. Large, high-quality single crystals of BNA (phi 8 mm x 30 mm) were grown using the vertical Bridgman method. The nonlinear optical (NLO) coefficient d(33) of the BNA crystal is approximately 234 pm/V, which is the largest value reported for any yellow NLO material. The collinear phase-matching condition of the type-0 configuration is satisfied using a 0.7-1 microm band pump wavelength. We generated THz waves using an organic BNA crystal; the generation range is 0.1-15 THz.
authors.affiliation: RIKEN Sendai, Aramaki-Aoba, Sendai, Japan. k-miyamoto@riken.jp
authors.forename: Katsuhiko
authors.initials: K
authors.lastname: Miyamoto
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Minamide
authors.forename: Masazumi
authors.initials: M
authors.lastname: Fujiwara
authors.forename: Hideki
authors.initials: H
authors.lastname: Hashimoto
authors.forename: Hiromasa
authors.initials: H
authors.lastname: Ito