公开(公告)号：US20180203327A1

公开(公告)日：2018-07-19

申请号：US15868164

申请日：2018-01-11

Applicant: SHIBUYA CORPORATION

Inventor： Toshiaki NAKA ,  Motoi SASAKI ,  Akito TSUCHIYA

IPC: G02F1/39 ,  G02F1/35

CPC classification number: G02F1/39 ,  G02F1/3501 ,  G02F2001/3503 ,  G02F2203/055 ,  G02F2203/13

Abstract: A pumping beam L1 enters from a pumping beam projector 3 into one end surface 2a of a nonlinear crystal 2, the pumping beam L1 and idler wave L2 are generated from another end surface 2b of the nonlinear crystal 2. The pumping beam L1 emitted from the other end surface 2b of the nonlinear crystal 2 is reflected and re-enters as a pumping beam L′ into the other end surface 2b and the idler wave L2 generated from the other end surface 2b of the nonlinear crystal is reflected by the reflection optical system 6 and re-enters as a seed beam L2′ into the other end surface 2b. The idler wave L2 enters as the seed beam L2′ together with the pumping beam L1′ into the nonlinear crystal and thus a terahertz wave with a large output and including a plurality of wavelengths can be generated.

公开(公告)号：US20170219911A1

公开(公告)日：2017-08-03

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

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.

公开(公告)号：US20180149946A1

公开(公告)日：2018-05-31

申请号：US15815096

申请日：2017-11-16

Applicant: SHIBUYA CORPORATION

Inventor： Toshiaki NAKA ,  Motoi SASAKI ,  Akito TSUCHIYA

IPC: G02F1/39 ,  G02F1/35

CPC classification number: G02F1/39 ,  G02F1/3501 ,  G02F1/3534 ,  G02F1/3551 ,  G02F2001/3503 ,  G02F2203/13

Abstract: Pumping beam L1 is caused to be incident on an end surface 4A of a nonlinear crystal 4, and seed beam L2 the diameter of which is increased by a concave lens 6 is collected and adjusted into a collimated beam by a convex lens 7 and is caused to be incident on the end surface 4A described above. As described above, the pumping beam L1 and the seed beam L2 are caused to be incident on the end surface 4A with the pumping beam L1 and the seed beam L2 superimposed on each other, whereby the nonlinear crystal 4 generates terahertz wave TH.Since the diameter of the seed beam L2 described above is increased by the concave lens 6, the diameter of the seed beam L2 incident on the end surface 4A can be greater than the diameter of the seed beam generated by a terahertz wave generator of related art shown in FIG. 3. The area where the pumping beam L1 and the seed beam L2 incident on the end surface 4A are superimposed on each other can be greater than the area in the terahertz wave generator of related art.Since the area where the seed beam L2 and the pumping beam L1 are superimposed on each other on the end surface 4A can be greater than ever, the intensity of the terahertz wave TH generated by the nonlinear crystal 4 can be increased.

公开(公告)号：US20180143510A1

公开(公告)日：2018-05-24

申请号：US15801869

申请日：2017-11-02

Applicant: SHIBUYA CORPORATION

Inventor： Toshiaki NAKA ,  Motoi SASAKI ,  Akito TSUCHIYA

IPC: G02F1/39 ,  G02F1/35

CPC classification number: G02F1/39 ,  G02F1/3501 ,  G02F1/3534 ,  G02F1/3544 ,  G02F2001/3503 ,  G02F2203/13

Abstract: A terahertz wave generator 1 includes a nonlinear crystal 4, which is capable of generating terahertz wave TH, a pumping beam emitter 2, which emits pumping beam L1, a seed beam emitter 3, which is disposed so as to be parallel to the nonlinear crystal 4 and emits seed beam L2, a first total reflection mirror 17 and a second total reflection mirror 18, which successively reflect the seed beam L2 emitted from the seed beam emitter 3 to cause the seed beam L2 to be incident on the nonlinear crystal 4, and a convex lens 6, which collects the seed beam L2.When the pumping beam L1 and the seed beam L2 are caused to be incident on the nonlinear crystal 4 with the pumping beam L1 and the seed beam L2 superimposed on each other, the nonlinear crystal 4 generates the terahertz wave TH.Moving the first total reflection mirror 17 in the horizontal direction along the optical path of the seed beam L2 immediately after it is emitted can change the angle of incidence of the seed beam L2 incident on the nonlinear crystal 4. A terahertz wave generator 1 that is more compact and inexpensive than ever can be provided.

公开(公告)号：US20180087022A1

公开(公告)日：2018-03-29

申请号：US15704731

申请日：2017-09-14

Applicant: SHIBUYA CORPORATION

Inventor： Masayo TAKAHASHI ,  Naoshi KOIDE ,  Takuya ONISHI ,  Motoi SASAKI ,  Masanari EJIRI

IPC: C12M1/00 ,  C12N5/00

CPC classification number: C12M47/02 ,  C12M23/38 ,  C12M23/50 ,  C12M25/02 ,  C12M37/00 ,  C12N5/0068 ,  C12N2533/54

Abstract: The present invention relates to a method for cutting a cell sheet S, which includes cutting the cell sheet S that is cultured in the inside of a container 4 which has accommodated a culture medium M therein, by a cutting device 3 that emits a laser L.The cutting method includes: removing the culture medium M from the container 4 and also sealing the container 4 by a lid portion 13 provided with a transmission part made from a material which allows the laser L to pass through, in the inside of an aseptic room 2 that has been kept in an aseptic condition; taking out the container 4 sealed by the lid portion 13, from the aseptic room 2, and moving the container to the cutting device 3 that is provided in the outside of the aseptic room 2; and in the cutting device 3, passing the laser L through the transmission part of the lid portion 13, and cutting the cell sheet S by the laser L. The method enables the cell sheet S to be cut in such a state that the aseptic condition is kept.