Optical rectification (OR) and second harmonic generation (SHG) occur simultaneously to generate terahertz waves when intense electromagnetic waves interact with noncentrosymmetric materials or nonlinear crystal powders such as powdered sugar. A 5W 800-nm wavelength laser with a 45 fs pulse at a 1 KHz repetition rate illuminated 200 µm and 400 µm thick sugar tablets through a chopper power control and a lens. A ZnTe 2 mm crystal was also utilized in the apparatus to compare to the sugar. The best experimental results from the sugar showed that a linearly polarized electromagnetic field was generated with a signal spectrum up to 3 THz with a 40 dB dynamic range.