Organic Nonlinear Optical Crystals for Highly Efficient Terahertz-Wave Generation

Optical terahertz wave generation in a planar GaAs waveguide.

We report generation of terahertz (THz) radiation in a planar 61-microm-thick GaAs waveguide with a TM0 propagation mode, achieved by phase-matched difference frequency mixing. The THz output was centered near 2 THz and had 1 microW average power. As a pump source we utilized both the signal and the idler outputs of a near-degenerate type II synchronously pumped optical parametric oscillator op...

Generation of Terahertz Radiation via Nonlinear Optical Methods

There is presently considerable research activity in the development of the new sources in the terahertz(THz) region of the spectrum. Over the past two to three years, many new techniques were developed for generating especially short or especially powerful pulses. New techniques also allow single shot detection of the THz pulse field as well as realtime and near-field imaging. Recent experimen...

Growth of Organic Nonlinear Optical Crystals from Solution

Efficient optical pumping of organic-inorganic heterostructures for nonlinear optics

Highly efficient and thermally stable nonlinear optical dendrimer for electrooptics.

For the fabrication of practical E-O devices, critical material requirements, such as large E-O coefficients, high stability (thermal, chemical, photochemical, and mechanical), and low optical loss, need to be simultaneously optimized.1 In the past decade, a large number of highly active nonlinear optical (NLO) chromophores have been synthesized, and some of these exhibit very large macroscopic...