公开(公告)号：US09897893B2

公开(公告)日：2018-02-20

申请号：US15411086

申请日：2017-01-20

Applicant: SHIBUYA CORPORATION

Inventor： Kodo Kawase ,  Toshiaki Naka ,  Motoi Sasaki ,  Akito Tsuchiya

IPC: G02F1/35 ,  G02F1/39 ,  H01S3/00 ,  G02F2/02

CPC classification number: G02F1/3501 ,  G02F1/3532 ,  G02F1/39 ,  G02F2001/3503 ,  G02F2001/3507 ,  G02F2001/392 ,  G02F2201/302 ,  G02F2203/13 ,  H01S3/0092 ,  H01S2302/02

Abstract: In a terahertz wave generation apparatus including a first non-linear optical crystal 3 on which first laser L1 and second laser L2 from laser generation means 2 are incident to generate terahertz wave TH1, the laser generation means includes a second non-linear optical crystal 7 on which laser having the same wavelength as that of the second laser is incident to generate idler light L1 including a plurality of wavelengths, and makes the idler light L1 generated from the second non-linear optical crystal incident on the first non-linear optical crystal as the first laser L1, to generate terahertz wave including a plurality of wavelengths from the first non-linear optical crystal 3, and wavelength selection means including a transmission section which transmits an idler light having the specific wavelength in the idler light including the plurality of wavelengths can be provided, as needed. Thus, terahertz wave having a high output power and including a plurality of wavelengths can be obtained, and the wavelength selection means easily obtains a required terahertz wave having the specific wavelength.