Terahertz wave generator based on in-plane magnetic anisotropy

• Main Authors: ZHANG ZONGZHI, ZHANG YU, WU GUANJIE, SONG YIWEN
• Format: Patent
• Language: Chinese; English
• Published: 23.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; DEVICES USING STIMULATED EMISSION; ELECTRICITY

The invention relates to a terahertz wave generator based on in-plane magnetic anisotropy, which comprises a femtosecond pulse laser and an in-plane magnetic anisotropy multilayer film, and is characterized in that the femtosecond pulse laser is located at one side of a light incident surface of the in-plane magnetic anisotropy multilayer film and is used for generating femtosecond pulse laser; the in-plane magnetic anisotropy multilayer film comprises an insulating substrate, a ferromagnetic layer, a non-magnetic layer and an anti-oxidation layer which are arranged in sequence, and any side of the anti-oxidation layer and the insulating substrate is the light incident surface; the in-plane magnetic anisotropy multilayer film is used for generating terahertz waves. Compared with the prior art, the terahertz generator is unique in emission principle, simple in structure and low in cost, can generate terahertz emission power and frequency spectrum which are comparable to those of a nonlinear crystal, and has hi