title: Single-frequency coherent terahertz-wave generation using two Cr:forsterite lasers pumped using one Nd:YAG laser.
abstract: We have developed a compact terahertz-wave generator using two small Cr:forsterite lasers with single Nd:YAG laser pumping based on difference frequency generation in a GaP crystal. A Cr:forsterite laser was constructed with diffraction gratings, by which the pulse duration and delay time of the Cr:forsterite laser depend on the Cr:forsterite laser energy and the cavity length. The Cr:forsterite laser energy was tuned using the optical alignment and pumping energy. Temporal overlap of two Cr:forsterite laser pulses was realized at the GaP crystal. A single-frequency terahertz wave was generated at energy of 4.7 pJ around 2.95 THz using a 30-cm-long Cr:forsterite laser system.
authors: Semiconductor Research Institute, Aoba 519-1176, Aramaki, Aoba-ku, Sendai 980-0845, Japan.
authors: Jun-ichi
authors: J
authors: Nishizawa
authors: Tetsuo
authors: T
authors: Sasaki
authors: Tadao
authors: T
authors: Tanabe
authors: Norimitsu
authors: N
authors: Hozumi
authors: Yutaka
authors: Y
authors: Oyama
authors: Ken
authors: K
authors: Suto