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Title:
TERAHERTZ TIME DOMAIN SPECTRAL RADIATION AND DETECTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/185555
Kind Code:
A1
Abstract:
A terahertz time domain spectral radiation and detection device. A femtosecond laser radiated by a femtosecond laser (1) in the terahertz time domain spectral radiation and detection device is divided by a beam splitter (5) into pump light and detecting light, which are transmitted in hollow photonic crystal optical fiber (8, 17). In the described terahertz time domain spectral radiation and detection device, by means of appropriately selecting the central wavelength of a pulse outputted by the femtosecond laser (1) such that the second-order fiber dispersion, which is generated when a laser pulse is transmitted in the hollow photonic crystal optical fiber (8, 17), is negative and neutralizes the positive dispersion, which is generated when the laser pulse passes through a light isolator (4), the beam splitter (5) and the like, inconvenience and overheads caused since conventional hollow optical fiber needs gratings or a pair of prisms to compensate for dispersion, are avoided. Secondly, since the pulse is transmitted substantially in the hollow optical fiber, the energy of a pulse having a width of tens of femtoseconds can be as high as several hundreds of nano-joules, and moreover, the pulse width is not expanded due to self-phase modulation, a high energy laser pulse is provided to a terahertz radiation means (9) and a detection means (18).

Inventors:
PAN, Yi (The East Part of 2nd Floor, No.37 Building Chentian Industrial Zone,1st Baotian Road, Xixiang Street, Bao'an Distric, Shenzhen Guangdong 2, 518102, CN)
PENG, Shichang (The East Part of 2nd Floor, No.37 Building Chentian Industrial Zone,1st Baotian Road, Xixiang Street, Bao'an Distric, Shenzhen Guangdong 2, 518102, CN)
DING, Qing (The East Part of 2nd Floor, No.37 Building Chentian Industrial Zone,1st Baotian Road, Xixiang Street, Bao'an Distric, Shenzhen Guangdong 2, 518102, CN)
LI, Chen (The East Part of 2nd Floor, No.37 Building Chentian Industrial Zone,1st Baotian Road, Xixiang Street, Bao'an Distric, Shenzhen Guangdong 2, 518102, CN)
Application Number:
CN2016/093268
Publication Date:
November 02, 2017
Filing Date:
August 04, 2016
Export Citation:
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Assignee:
SHENZHEN TERAHERTZ SYSTEM EQUIPMENT CO., LTD. (The East Part of 2nd Floor, No.37 Building Chentian Industrial Zone,1st Baotian Road, Xixiang Street, Bao'an Distric, Shenzhen Guangdong 2, 518102, CN)
International Classes:
G01J3/28
Foreign References:
CN105737984A2016-07-06
CN205719255U2016-11-23
CN101542944A2009-09-23
CN105467509A2016-04-06
CN101526398A2009-09-09
CN105181155A2015-12-23
US20120224597A12012-09-06
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (Room 3901, No. 85 Huacheng Avenue Tianhe Distric, Guangzhou Guangdong 3, 510623, CN)
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