To irradiate a sample with a pulse laser beam having sufficient intensity for observation of a four-wave mixing process including a CARS (coherent anti-stokes Raman scattering) process that induces an in-vivo nonlinear interaction between a sample and a pulse laser beam and observation of other nonlinear interactions. 生体内において試料とパルスレーザ光との非線形相互作用を誘起するCARS過程を含む四光波混合過程、その他の非線形相互作用を観測するために、十分な強度のパルスレーザ光を照射する。 - 特許庁
A crystal axis of the electro-optic crystal 4 of the waveguide is set such that the terahertz wave generated by a second-order nonlinear optical process and the light propagating through the waveguide are phase-matched. 導波路の電気光学結晶4の結晶軸は、2次非線形過程により発生するテラヘルツ波と導波路を伝播する光との位相整合が取れる様に設定される。 - 特許庁