Figure| Working principle of collinear R-FWM (CSRS) THz generation in the strained diamond. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Figure| Working principle of collinear R-FWM (CSRS) THz generation in the strained diamond.

Caption

Figure| Working principle of collinear R-FWM (CSRS) THz generation in the strained diamond. a. Energy level diagram of CSRS. ω1 and ω2 are pulse pairs for stimulated Raman excitation of phonon Q. MIR pulse ωMIR then beat with the coherent phonon and frequency down-convert to THz pulse ωTHz. b. Schematic of the experimental geometry used to study CSRS in diamond under a uniaxial stress.

Credit

Chuanshan Tian et al.

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